NORMAL EXTENSION AND RETRACTION - TASK SUPPORTING DATA

** ON A/C NOT FOR ALL

1. General
The task supporting data is given in the sequence that follows:

Para. 2. gives a table of the LGCIU trouble shooting fault code numbers and their related data
Para. 3. gives a typical procedure for trouble shooting LGCIU discrete output faults
Para. 4. gives a typical procedure for trouble shooting proximity sensor and/or related circuit faults
Para. 5. gives a list of the fault messages that the LGCIU1 can send to the CFDS
Para. 6. gives a list of the fault messages that the LGCIU2 can send to the CFDS.

** ON A/C NOT FOR ALL

2. LGCIU Trouble Shooting Fault Code Numbers and Related Data.

A. The data that follows is applicable to LGCIU P/N 664700500A4x only

The table that follows gives the faults that each LGCIU can find during:

normal system operation (system monitoring)
the BITE test.
The table has these headings:
CODE, the number that the trouble shooting data gives to identify a system FAULT
DESIGNATION, the specified fault
LGCIU No. 1 No. 2, the LGCIU that can find the fault
ON STANDBY, a fault that causes the master LGCIU to change its status to On Standby (this causes the other LGCIU to control the L/G system Ref. AMM 32-31-00)
TSM PROCEDURE, the number of the trouble shooting procedure given in 32-31-00 for the specified fault

CFDS MESSAGE NUMBER, a number that identifies the message that the LGCIU sends for a specified fault (Refer to Para. 7. or 8.).

The trouble shooting data that includes the FAULT code number is shown on the MCDU as follows:

------------------------------------

! LGCIU 1 ------> !

! TROUBLE SHOOTING DATA !

L1 ! XY - ABCD DATE: NOV 20 ! R1

! FAULT GMT ATA CNT PH !

L2 ! G123 1220 32-31-71 01 05 ! R2

! A003 1100 32-31-73 02 05 !

L3 ! ! R3

! !

L4 ! ! R4

! !

L5 ! ! R5

! !

L6 ! < RETURN PRINT > ! R6

------------------------------------

NOTE: The letter at the start of the fault code number shows the location of the fault. The letter A shows the fault is external to the LGCIU and it is recommended that the LGCIU is not replaced until it is sure that there are no external faults. The letters B thru J show the fault is internal to the LGCIU. The fault code letters are:

A - LGCIU Not affected LRU (Prox Sensor Etc.)
B - Output Card
C - Proximity Card 1
D - Proximity Card 2
E - Interface Card 1
F - Interface Card 2
G - Interface Card 3
H - LGCIU Microprocessor Card
I - LGCIU Power Supply Module
J - LGCIU OBRM

------------------------------------------------------------------------------

CODE DESIGNATION LGCIU CONTROL TSM CFDS

No.1 No.2 FAULT PROCEDURE MESSAGE

IN 32-31-00 NUMBER

------------------------------------------------------------------------------

A001 Not Used on Software Standards

4B 4C, 4D.

A002 CFDS or input ARINC 429 Bus 1 2 No 801 2

pins AA-12J/K No Input Data

for 20 secs. Commonly seen

as LGCIU Remains powered

when CFDS is off.

A003 CFDS failure. The data recieved 1 2 no 801 2

by LGCIU is the wrong parity.

A004 Gear retract solenoid, short 1 2 Yes 806 3

circuit.

A005 Gear extend solenoid, short 1 2 Yes 806 3

circuit.

A006 Gear doors open solenoid, short 1 2 Yes 807 5

circuit.

A007 Gear doors close solenoid, short 1 2 Yes 807 5

circuit.

A008 LGCIU operational signal fault 1 2 Yes 802 1

------------------------------------------------------------------------------

CODE DESIGNATION LGCIU CONTROL TSM CFDS

No.1 No.2 FAULT PROCEDURE MESSAGE

IN 32-31-00 NUMBER

------------------------------------------------------------------------------

A009 Not used

A010 Not used

A011 Not used

A012 Nose gear shock absorber 1 2 No 868 11

'not extended' after

commencement of retraction,

triggers retraction inhibit.

seconds confirmation time.

A013 Not Used

A014 Not Used

A015 Gear selector lever 'up'switches 1 2 yes 809 14

disagree.

A016 Gear selector lever'down' 1 2 Yes 809 14

switches disagree.

A017 Gear selector lever both up and 1 2 Yes 809 14

down selected.

A018 Nose gear extended/centered 1 2 Yes 815 17

prox sensor open or short

circuit. If fault is still

present, interactive mode not

possible unless ground power

connected.

A019 RH gear extended prox sensor 1 2 Yes 813 15

open circuit. See A018

A020 Nose gear uplock prox sensor 1 2 Yes 827 30

open or short circuit.

A021 RH gear uplock prox sensor 1 2 Yes 825 28

open or short circuit.

A022 RH gear door fully open prox 1 2 Yes 816 18

sensor open or short circuit.

A023 Nose gear downlock prox sensor 1 2 Yes 824 27

open or short circuit.

A024 RH nose door fully open prox 1 2 Yes 818 20

sensor open or short circuit.

A025 LH nose door fully open prox 1 2 Yes 818 21

sensor open or short circuit.

A026 LH gear downlock prox sensor 1 2 Yes 823 26

open or short circuit.

A027 RH gear downlock prox sensor 1 2 yes 822 25

open or short circuit.

A028 Nose gear doors lock prox sensor 1 2 Yes 821 24

open or short circuit.

A029 RH door lock prox sensor 1 2 Yes 819 22

open or short circuit.

A030 Not used

A031 Not used

A032 LH gear uplock prox 1 2 Yes 826 29

sensor open or short

circuit.

A033 LH gear shock absorber extend 1 2 Yes 814 16

prox sensor open

or short circuit. See A018

A034 FWD cargo door safety mechanism 1 No 832 33

prox sensor open or short circuit.

A035 AFT cargo door safety mechanism 1 No 833 34

prox sensor open or short circuit.

A036 FWD cargo door lockshaft 2 No 834 35

prox sensor open or short circuit.

A037 AFT cargo door lockshaft 2 No 835 36

prox sensor open or short circuit.

A038 LH gear door lock prox 1 2 Yes 820 23

sensor open or short circuit.

A039 LH gear door fully open prox 1 2 Yes 817 19

sensor open or short circuit.

A040 FWD cargo door handle prox 1 No 830 31

sensor open or short circuit.

A041 Aft cargo door handle prox 1 No 831 32

sensor open or short circuit.

A042 LH flap prox sensor 1 2 No 828 37

open or short circuit.

A043 RH flap prox sensor 1 2 No 829 38

open or short circuit.

A044 Not used

A045 Not used

------------------------------------------------------------------------------

CODE DESIGNATION LGCIU CONTROL TSM CFDS

No.1 No.2 FAULT PROCEDURE MESSAGE

IN 32-31-00 NUMBER

------------------------------------------------------------------------------

A046 Not used

A047 Not used

B048 Gear retract solenoid on when 1 2 Yes 806 1

neutral selected.

B049 Gear extend solenoid on when 1 2 Yes 806 1

neutral selected.

B050 Gear doors open solenoid on 1 2 Yes 807 1

when neutral selected.

B051 Gear doors close solenoid on 1 2 Yes 807 1

when neutral selected.

B052 Gear retract solenoid 1 2 Yes 806 1

transistors incompatible.

B053 Gear extend solenoid 1 2 Yes 806 1

transistors incompatible.

B054 Doors open solenoid 1 2 Yes 807 1

transistors incompatible.

B055 Doors close solenoid 1 2 yes 807 1

transistors incompatible.

B056 A solenoid on when 1 2 Yes 883 1

drive transistors disabled.

B057 Output card power supply failure. 1 2 Yes 802 1

C058 Nose gear shock absorber 1 2 Yes 802 1

channel fault on prox card.

C059 Right gear shock absorber 1 2 Yes 802 1

channel fault on prox card.

C060 Nose gear uplock channel 1 2 Yes 802 1

fault on prox card.

C061 Right gear uplock channel 1 2 Yes 802 1

fault on prox card.

C062 Right gear door fully open 1 2 Yes 802 1

channel fault on prox card.

C063 Nose gear downlock 1 2 Yes 802 1

channel fault on prox card.

------------------------------------------------------------------------------

CODE DESIGNATION LGCIU CONTROL TSM CFDS

No.1 No.2 FAULT PROCEDURE MESSAGE

IN 32-31-00 NUMBER

------------------------------------------------------------------------------

C064 Nose gear door right open 1 2 Yes 802 1

channel fault on prox card.

C065 Nose gear door left open 1 2 Yes 802 1

channel fault on prox card.

C066 LH gear downlock 1 2 Yes 802 1

channel fault on prox card.

C067 RH gear downlock 1 2 Yes 802 1

channel fault on prox card.

C068 Nose gear lock 1 2 Yes 802 1

channel fault on prox card.

C069 RH gear door lock 1 2 Yes 802 1

channel fault on prox card.

C070 Prox card self test error. 1 2 Yes 802 1

C071 Prox card 1 1 2 Yes 802 1

power supply failure.

C072 Not used

C073 Not used

D074 LH gear uplock 1 2 Yes 802 1

channel fault on prox card.

D075 LH gear shock absorber 1 2 Yes 802 1

channel fault on prox card.

D076 FWD cargo door safety mechanism 1 No 802 1

channel fault on prox card.

D077 AFT cargo door safety mechanism 1 No 802 1

channel fault on prox card.

D078 FWD cargo door lockshaft 2 No 802 1

channel fault on prox card.

D079 AFT cargo door lockshaft 2 No 802 1

channel fault on prox card.

D080 LH gear door lock 1 2 Yes 802 1

channel fault on prox card.

D081 LH gear door fully open 1 2 Yes 802 1

channel fault on prox card.

------------------------------------------------------------------------------

CODE DESIGNATION LGCIU CONTROL TSM CFDS

No.1 No.2 FAULT PROCEDURE MESSAGE

IN 32-31-00 NUMBER

------------------------------------------------------------------------------

D082 Not used

D083 Not used

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CODE DESIGNATION LGCIU CONTROL TSM CFDS

No.1 No.2 FAULT PROCEDURE MESSAGE

IN 32-31-00 NUMBER

------------------------------------------------------------------------------

D084 )

thru ) Not used

D089 )

D090 Proximity card 2 self test error. 1 2 Yes 802 1

D091 Proximity card 2 power supply 1 2 Yes 802 1

fault.

E092 LH & RH gear compressed 1 2 No 802 1

interface signal fault, for LGCIU

pins affected see code E198.

E093 LH & RH gear compressed 1 2 No 802 1

interface signal fault, for LGCIU

pins affected see code E199.

E094 LH & RH gear compressed 1 2 No 802 1

interface signal fault, for LGCIU

pins affected see code E200.

E095 LH & RH gear compressed 1 2 No 802 1

interface signal fault, for LGCIU

pins affected see code E201.

E096 Nose gear compressed 1 2 No 802 1

interface signal fault, for LGCIU

pins affected see code E202.

E097 LH gear compressed 1 2 No 802 1

interface signal fault, for LGCIU

pins affected see code E203.

E098 Nose gear compressed 1 2 No 802 1

interface signal fault, for LGCIU

pins affected see code E204.

E099 LH gear compressed 1 2 No 802 1

interface signal fault, for LGCIU

pins affected see code E205.

E100 LH gear compressed 1 2 No 802 1

interface signal fault, for LGCIU

pins affected see code E206.

E101 LH gear compressed 1 2 No 802 1

interface signal fault, for LGCIU

pins affected see code E207.

E102 LH gear compressed 1 2 No 802 1

interface signal fault, for LGCIU

pins affected see code E208.

E103 RH gear compressed 1 2 No 802 1

interface signal fault, 1 2 No 802

pins affected see code E209.

E104 RH gear compressed 1 2 No 802 1

interface signal fault, for LGCIU

pins affected see code E210.

E105 RH gear compressed 1 2 No 802 1

interface signal fault, for LGCIU

pins affected see code E211.

E106 RH gear compressed 1 2 No 802 1

interface signal fault, for LGCIU

pins affected see code E212.

F107 LH & RH gear downlocked 1 2 No 802 1

interface signal fault, for LGCIU

pins affected see code F213.

F108 Nose gear downlocked interface 1 2 No 802 1

signal fault, for LGCIU

pins affected see code F214.

F109 Nose gear downlocked interface 1 2 No 802 1

signal fault, for LGCIU

pins affected see code F215.

F110 Nose gear downlocked interface 1 2 No 802 1

interface signal fault, for LGCIU

pins affected see code F216.

------------------------------------------------------------------------------

CODE DESIGNATION LGCIU CONTROL TSM CFDS

No.1 No.2 FAULT PROCEDURE MESSAGE

IN 32-31-00 NUMBER

------------------------------------------------------------------------------

F111 LH gear downlocked interface 1 2 No 802 1

signal fault, for LGCIU pins

affected see code F217.

F112 RH gear downlocked interface 1 2 No 802 1

signal fault, for LGCIU pins

affected see code F218.

F113 LH & RH gear extended 1 2 No 802 1

interface signal fault, for

LGCIU pins affected see code F219.

F114 Nose gear extended interface 1 2 No 802 1

signal fault, for LGCIU pins

affected see code F220.

F115 LH gear extended interface 1 2 No 802 1

signal fault, for LGCIU pins

affected see code F221.

F116 LH gear extended interface 1 2 No 802 1

signal fault, for LGCIU pins

affected see code F222.

F117 RH gear extended interface 1 2 No 802 1

signal fault, for LGCIU pins

affected see code F223.

F118 RH gear extended interface 1 2 No 802 1

signal fault, for LGCIU pins

affected see code F224.

F119 Not used

F120 RH L/G Gear locked up interface 1 2 No 802 1

signal fault, for LGCIU pins

affected see code F226.

G121 LH & RH gear compressed interface 1 2 No 802 1

signal fault, for LGCIU pins

affected see code G227.

G122 LH & RH L/G compressed interface 1 2 No 802 1

signal fault, for LGCIU pins

affected see code G228.

G123 LH & RH gear compressed interface 1 2 No 802 1

signal fault, for LGCIU pins

affected see code G229.

G124 FWD cargo door interface 1 No 802 1

signal fault, for LGCIU pins

affected see code G230.

G125 LH & RH gear extended interface 1 2 No 802 1

signal fault, for LGCIU pins

affected see code G231.

G126 LH & RH gear extended interface 1 2 No 802 1

signal fault, for LGCIU pins

affected see code G232.

G127 LH & RH gear extended interface 1 2 No 802 1

signal fault, for LGCIU pins

affected see code G233.

G128 AFT cargo door signal fault for 1 No 802 1

LGCIU affected pins see code G234.

G129 Nose gear extended interface 1 2 No 802 1

signal fault, for LGCIU pins

affected see code G235.

G130 Nose gear extended interface 1 2 No 802 1

signal fault, for LGCIU pins

affected see code G236.

G131 Nose gear extended interface 1 2 No 802 1

signal fault, for LGCIU pins

affected see code G237.

G132 Nose gear locked up interface 1 2 No 802 1

signal fault, for LGCIU pins

affected see code G238.

H133 OBRM corruption error. 1 2 Yes 802 1

H134 NOVOL storage checksum failure. 1 2 Yes 802 1

H135 NOLVOL RAM/bus failure, 1 2 Yes 802 1

read/write error.

H136 External RAM/bus failure, 1 2 Yes 802 1

read/write error.

H137 On chip RAM/bus failure, 1 2 Yes 802 1

read/write error.

H138 ARINC output bus 1 2 No 850 1

wrap around error.

H139 Solenoids not disabled on 1 2 Yes 802 1

power-up.

H140 Not used

H141 ARINC chip transmit buffer 1 2 No 802 1

not ready.

H142 Not used

H143 Not used

H144 Not used

A145 Non-changeover of landing gear 1 2 No 802, 804 41

control,

(due to control circuit).

H146 Watchdog timer fault during 1 2 Yes 802 1

initialization.

H147 Watchdog timer reset, audit 1 2 Yes 802 1

trail fault.

H148 Watchdog timer reset, software 1 2 Yes 802 1

overrun.

J149 Software fault log pointer 1 2 Yes 802 1

corruption.

NOTE: The specified proximity switches identify total sensing circuits

(a proximity sensor and a channel of a proximity conditioning card).

------------------------------------------------------------------------------

CODE DESIGNATION LGCIU CONTROL TSM CFDS

No.1 No.2 FAULT PROCEDURE MESSAGE

IN 32-31-00 NUMBER

------------------------------------------------------------------------------

A150 RH gear extended prox sensor 1 2 no 842 44

disagreement.

A151 LH gear extended prox sensor 1 2 no 842 45

disagreement.

A152 Nose gear extended prox 1 2 no 842 46

sensor disagreement.

A153 RH gear door fully open prox 1 2 no 840 47

sensor disagreement.

A154 LH gear door fully open prox 1 2 no 840 48

sensor disagreement.

A155 Nose gear RH door open prox 1 2 no 840 49

sensor disagreement.

A156 Nose gear LH door open prox 1 2 no 840 50

sensor disagreement.

A157 RH gear door closed prox 1 2 no 837 51

sensor disagreement.

A158 LH gear door closed prox 1 2 no 837 52

sensor disagreement.

A159 Nose gear door closed prox 1 2 no 837 53

sensor disagreement.

A160 )

thru ) Not used

A165 )

NOTE: The specified proximity switches identify total sensing circuits (a

(a proximity sensor and a channel of a proximity conditioning card).

-------------------------------------------------------------------------------

------------------------------------------------------------------------------

CODE DESIGNATION LGCIU CONTROL TSM CFDS

No.1 No.2 FAULT PROCEDURE MESSAGE

IN 32-31-00 NUMBER

------------------------------------------------------------------------------

C166 Nose gear extended/centered 1 2 Yes 815 17

signal conditioning failure.

C167 RH gear extended signal 1 2 Yes 813 15

conditioning failure.

C168 Nose gear uplock signal 1 2 Yes 827 30

conditioning failure.

C169 RH gear uplock signal 1 2 Yes 825 28

conditioning failure.

C170 RH gear door open signal 2 yes 816 18

conditioning failure.

C171 Nose gear downlock signal 1 2 Yes 824 27

conditioning failure.

C172 Nose gear RH door open. 1 2 Yes 818 20

signal conditioning failure.

C173 Nose gear LH door open 1 2 Yes 818 21

signal conditioning failure.

C174 LH gear downlock signal 1 2 Yes 823 26

conditioning failure.

C175 RH gear downlock signal 1 2 Yes 822 2

conditioning failure.

C176 Nose gear doors uplock signal 1 2 Yes 821 24

conditioning failure.

C177 RH gear doors lock signal 1 2 Yes 819 22

conditioning failure.

C178 Prox card 1 bus read/write error. 1 2 Yes 802 1

C179 Not used

C180 Not used

D181 LH gear uplock signal 1 2 Yes 826 29

conditioning failure.

D182 LH gear extended signal 1 2 Yes 814 16

conditioning failure.

D183 FWD cargo door safety mechanism 1 No 832 33

signal conditioning failure.

D184 AFT cargo door safety mechanism 1 No 833 34

signal conditioning failure.

D185 FWD cargo door lockshaft signal 2 No 834 35

conditioning failure.

D186 AFT cargo door lockshaft signal 2 No 835 36

conditioning failure.

C187 LH gear door closed signal 1 2 Yes 820 23

conditioning failure.

D188 LH gear fully open signal 1 2 Yes 817 19

conditioning failure.

D189 FWD cargo door locking handle 1 No 830 31

signal conditioning failure.

D190 AFT cargo door locking handle 1 No 831 32

signal conditioning failure.

C191 LH flap signal 1 2 No 828 37

conditioning failure.

D192 RH flap signal 1 2 No 829 38

conditioning failure.

------------------------------------------------------------------------------

CODE DESIGNATION LGCIU CONTROL TSM CFDS

No.1 No.2 FAULT PROCEDURE MESSAGE

IN 32-31-00 NUMBER

------------------------------------------------------------------------------

D193 Not used

D194 Not used

------------------------------------------------------------------------------

CODE DESIGNATION LGCIU CONTROL TSM CFDS

No.1 No.2 FAULT PROCEDURE MESSAGE

IN 32-31-00 NUMBER

------------------------------------------------------------------------------

D195 Not used

D196 Not used

D197 Prox card 2 PCB bus error. 1 2 Yes 802 1

E198 LH & RH gear compressed interface 1 2 No 802 1

signal fault, AB-1A, 1B, 2A, 2B,

3A, 3B, 4A, 4B.

E199 LH & RH gear compressed interface 1 2 No 802 1

signal fault, pins AB-1C, 1D, 2C,

2D, 3D.

E200 LH & RH gear compressed interface 1 2 No 802 1

signal fault, pins AB-3C, 4C, 4D,

5C, 5D, 3E.

E201 LH & RH GEAR compressed interface 1 2 No 802 1

signal fault, pins AA-10K, 10J,

11K, 11J.

------------------------------------------------------------------------------

CODE DESIGNATION LGCIU CONTROL TSM CFDS

No.1 No.2 FAULT PROCEDURE MESSAGE

IN 32-31-00 NUMBER

------------------------------------------------------------------------------

E202 Nose gear compressed interface 1 2 No 802 1

signal fault, pins AB-6A, 6B,

7A, 7B, 8A, 8B, 9A, 9B.

E203 LH gear compressed interface 1 2 No 802 1

signal fault, pins AB-1H, 2H,

3H, 4H.

E204 Nose gear compressed interface 1 2 No 802 1

signal fault, pins AB-15A,

15B, 15C, 15D.

E205 LH gear compressed interface 1 2 No 802 1

signal fault, pin AB-15K only.

E206 LH gear compressed interface 1 2 No 802 1

signal fault, pin AB-15J only.

E207 LH gear compressed interface 1 2 No 802 1

signal fault, pins AB-1F, 1G,

2F, 2G, 3F, 3G, 4F, 4G.

E208 LH gear compressed interface 1 2 No 802 1

signal fault, pins AB-14A, 14B,

14C, 14D.

E209 RH gear compressed interface 1 2 No 802 1

signal fault, pin AB-13K.

E210 RH gear compressed interface 1 2 No 802 1

signal fault, pins AB-13J.

E211 RH gear compressed interface 1 2 No 802 1

signal fault, pins AB-1J, 1K,

2J, 2K, 3J, 3K, 4J, 4K.

E212 RH gear compressed interface 1 2 No 802 1

signal fault, pins AB-13E, 14E,

13D, 13C.

F213 LH & RH gear downlocked 1 2 No 802 1

interface signal fault, pins

AB-6J, 6K, 7J, 7K.

F214 Nose L/G downlocked interface 1 2 No 802 1

signal fault, pin AB-11K.

F215 Nose gear downlocked interface 1 2 No 802 1

signal fault, pin AB-11J.

F216 Nose gear downlocked interface 1 2 No 802 1

signal fault, pins AB-12A, 12B,

13A, 13B.

F217 LH gear downlocked interface 1 2 No 802 1

signal fault, pins AB-6F, 7F,

6G, 7G.

F218 RH gear downlocked interface 1 2 No 802 1

signal fault, pin AA-11G

F219 LH & RH gear extended interface 1 2 No 802 1

signal fault, pins AB-12G, 12H,

12J, 12K.

F220 Nose gear extended interface 1 2 No 802 1

signal fault, pins AB-14G, 14H,

14J, 14K.

F221 LH gear extended interface 1 2 No 802 1

signal fault, pins AB-6C, 7C,

6D, 7D, 6E, 7E.

F222 LH gear extended interface 1 2 No 802 1

signal fault, pins AB-8C, 9C,

8D, 9D, 10D, 8E, 9E, 10E.

F223 RH gear extended interface 1 2 No 802 1

signal fault, pins AB-8J, 8K,

9J, 9K, 10J, 10K.

------------------------------------------------------------------------------

CODE DESIGNATION LGCIU CONTROL TSM CFDS

No.1 No.2 FAULT PROCEDURE MESSAGE

IN 32-31-00 NUMBER

------------------------------------------------------------------------------

F224 RH gear extended interface 1 2 No 802 1

signal fault, pins AB-8G, 8H,

9G, 9H, 10G, 10H.

F225 Not used

F226 RH gear locked up interface 1 2 No 802 1

signal fault, pin AA-9G.

G227 LH & RH gear compressed interface 1 2 No 802 1

signal fault, pin AA-14A.

G228 LH & RH gear compressed interface 1 2 No 802 1

signal fault pin AA-15A.

G229 LH & RH gear compressed interface 1 2 No 802 1

signal fault, pin AA-15B

G230 FWD cargo door interface 1 No 802 1

signal fault, pin AB-11A.

(LGCIU 1) only

G231 LH & RH gear extended interface 1 2 No 802 1

signal fault, pin AA-10D.

G232 LH & RH gear extended interface 1 2 No 802 1

signal fault, pin AA-11D.

G233 LH & RH gear extended interface 1 2 No 802 1

signal fault, pin AA-12D.

G234 AFT cargo door interface 1 No 802 1

signal fault, pin AB-11B.

(LGCIU 1 only)

G235 Nose gear extended interface 1 2 No 802 1

signal fault, pin AA-10A.

G236 Nose gear extended interface 1 2 No 802 1

signal fault, pin AA-11A.

G237 Nose gear extended interface 1 2 No 802 1

signal fault, pins AB-14K, 14H,

14J, 14G.

G238 Nose gear not locked up interface 1 2 No 802 1

signal fault, pin AB-11D.

H239 Watchdog timer reset failure. 1 2 Yes 802 1

-------------------------------------------------------------------------------

------------------------------------------------------------------------------

CODE DESIGNATION LGCIU CONTROL TSM CFDS

No.1 No.2 FAULT PROCEDURE MESSAGE

IN 32-31-00 NUMBER

------------------------------------------------------------------------------

A240 RH gear uplock prox sensor 1 2 no 837 57

disagreement.

A241 LH gear uplock prox sensor 1 2 no 837 58

disagreement.

A242 Nose gear uplock prox sensor 1 2 no 837 59

disagreement.

A243 RH gear downlock prox sensor 1 2 no 896 54

disagreement.

A244 LH gear downlock prox sensor 1 2 no 896 55

disagreement.

A245 Nose gear downlock prox 1 2 no 896 56

sensor disagreement

A246 Not used

A247 Not used

A248 FWD cargo door lock handle 1 no 877 60

prox sensor disagreement.

A249 AFT cargo door lock handle 1 no 886 61

prox sensor disagreement.

A250 FWD cargo door lockshaft 2 no 877 64

prox sensor disagreement.

A251 AFT cargo door lockshaft 2 no 886 65

prox sensor disagreement.

A252 FWD cargo door safety 1 no 877 62

mechanism prox sensor

disagreement.

A253 AFT cargo door safety 1 no 886 63

mechanism prox sensor

disagreement.

------------------------------------------------------------------------------

B. The data that follows is applicable to P/N 80-178-xx LGCIU only.

When the LGCIU finds a Class 1 or Class 2 fault, troubleshooting data is recorded. This shows the system status at the time of the initial fault.
The data recorded with each logged fault is as follows: a

A code which identifies the fault condition
The number of times the fault has occurred during the flight
The date of the initial report of a fault condition followed by the time confirmed
The time of the initial report of a fault condition followed by the time confirmed
The flight phase during which a fault was initially recorded followed by the time confirmed
A reference to the tail number which identifies the aircraft

The aircraft flight leg counter value.

The troubleshooting data page for the newest fault is shown when the operator sets the troubleshooting option on the main menu screen. If a fault has been found, the troubleshooting data for the newest fault is shown on the MCDU as follows:

--------------------------

! LGCIU 1 !

! troubleshooting data !

L1 !date utc ! R1

! !

L2 !sep16 1300 ! R2

!323111 !

L3 !lg control lever (6ga)/ ! R3

!lgciu(5ga1) !

L4 !1111 2222 3333 4444 5555! R4

!6666 7777 8888 9999 aaaa!

L5 !bbbb cccc dddd eeee ffff! R5

! !

L6 !<RETURN PRINT>! R6

--------------------------

To view the troubleshooting data for faults found before, the Page Down key should be used. You can get access to a different troubleshooting data page from the ground report page if a fault initially occurred on the ground. With such a fault the top of the page would be ground report, not troubleshooting data.
The LGCIU records troubleshooting data for the current flight leg and the 63 legs before, up to a maximum of 30 faults. If the total number of faults found in the current flight leg and the flight legs before is more than 30, only the 30 newest faults will be recorded.
If no fault is given the MCDU is shown as follows:

--------------------------

! LGCIU 1 !

! troubleshooting data !

L1 ! ! R1

! !

L2 ! no fault detected ! R2

! !

L3 ! ! R3

! !

L4 ! ! R4

! !

L5 ! ! R5

! !

L6 !<RETURN PRINT>! R6

--------------------------

The troubleshooting data is encoded as 15 words and each word has 4 hexadecimal characters. To decode the data each character is converted to binary and a 16 bit binary word shown as follows:

! Word X !

-----------

! hex 4 ! ! hex 3 ! ! hex 2 ! ! hex 1 !

---------------------------------------------------------

! bit ! ! bit ! ! bit ! ! bit !

!15!14!13!12! !11!10!09!08! !07!06!05!04! !03!02!01!00!

An example is shown below.

! 1F5A !

---------------

! 1 ! ! F ! ! 5 ! ! A !

------------------------------------------------------

! 0001 ! ! 1111 ! ! 0101 ! ! 1010 !

The table that follows gives the value of each of the binary bits you can get by decoding the troubleshooting data. Instructions for the decoding of specific words are given between the tables.

The abbreviations used in the tables below are as follows:

FC = Fault Code

T Mon = Temperature Monitoring

FP = Flight Phase

P/Snsr = Proximity Sensor

Lbl = Label

Ocr = Occurrence

SRU = Shop Replaceable Unit.

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! Word 1 ! Word 2 ! Word 3 !

------------------------------------------------------------------------------

15 FC - Bit 1 15 T Mon - Bit 1 15 <Not used, set to 0>

14 FC - Bit 2 14 T Mon - Bit 2 14 <Not used, set to 0>

13 FC - Bit 3 13 T Mon - Bit 3 13 <Not used, set to 0>

12 FC - Bit 4 12 T Mon - Bit 4 12 <Not used, set to 0>

11 FC - Bit 5 11 T Mon - Bit 5 11 <Not used, set to 0>

10 FC - Bit 6 10 T Mon - Bit 6 10 Last reset - other*

9 FC - Bit 7 9 T Mon - Bit 7 9 <Not used, set to 0>

8 FC - Bit 8 8 T Mon - Bit 8 8 <Not used, set to 0>

7 FC - Bit 9 7 ARINC outputs disabled* 7 Last reset - int w/d*

6 FC - Bit 10 6 RST_CNT0 6 <Not used, set to 0>

5 FC - Bit 11 5 RST_CNT1 5 <Not used, set to 0>

4 FC - Bit 12 4 RST_CNT2 4 <Not used, set to 0>

3 Ocr Count - 3 PBIT passed* 3 <Not used, set to 0>

Bit 1 (LSB)

2 Ocr Count - 2 Last reset - POR* 2 <Not used, set to 0>

Bit 2 (MSB)

1 <Not used, 1 <Not used, set to 0> 1 <Not used, set to 0>

set to 0>

0 <Not used, 0 Last reset - ext w/d* 0 <No used, set to 0>

set to 0>

-------------------------------------------------------------------------------

Word 1
The fault code (in hexadecimal) is the first 3 digits of word 1. Convert the hexadecimal to decimal and find the fault code in the table below. The fault code is encoded in the 4th digit of word 1. The fault count (1 to 4) is encoded in bits 2 and 3 as follows:

00 = 1 occurrence

01 = 2 occurrences

10 = 3 occurrences

11 = 4 occurrences

As bits 0 and 1 are not used and set to 0, the 4th digit of word 1 will be:

0 = 1 occurrence

4 = 2 occurrences

8 = 3 occurrences

C = 4 occurrences

For example if word 1 is 17FC, the fault has been shown on 4 occasions

as the last bit is C. The fault code is 17F in hexadecimal. Converted

to decimal this is 383. From the table below, fault code 383 is "Nose

gear door uplock locked (PS11) proximity sensor short circuit". The

related troubleshooting task is TSM 32-31-00-810-821". The fault has been

shown on 4 occasions as the last bit is C.

Word 2
The temperature monitor can be converted to a temperature in degrees Celsius as follows:
Decimal Value = 4* the 8 bits converted to decimal temperature in degree Celsius = (decimal Value* 0.3441)-50

For the reset count (RST_CNT) the conversion is as follows:

111 = count of 0

110 = count of 1

101 = count of 2

011 = count of 3

------------------------------------------------------------------------------

! Word 4 ! Word 5 ! Word 6

------------------------------------------------------------------------------

15 FP - Bit 1 15 Flight Leg - Bit 1 15 P/Snsr 1 target near*

14 FP - Bit 2 14 Flight Leg - Bit 2 14 P/Snsr 2 target near*

13 FP - Bit 3 13 Flight Leg - Bit 3 13 P/Snsr 3 target near*

12 FP - Bit 4 12 Flight Leg - Bit 4 12 P/Snsr 4 target near*

11 SELECT_IN* 11 Flight Leg - Bit 5 11 P/Snsr 5 target near*

10 SELECT_ OUT 10 Flight Leg - Bit 6 10 P/Snsr 6 target near*

(s/w cmd)*

9 Offside LGCIU 9 Flight Leg - Bit 7 9 P/Snsr 7 target near*

active*

8 <Not used, set to 0> 8 Flight Leg - Bit 8 8 P/Snsr 8 target near*

7 Lbl 227 BITE Cmd-Bit 1 7 SRU Code (X,Y,Z) 7 P/Snsr 9 target near*

6 Lbl 227 BITE Cmd-Bit 2 6 SRU Code (X,Y,Z) 6 P/Snsr 10 target near*

5 Lbl 227 BITE Cmd-Bit 3 5 SRU Code (X,Y,Z) 5 P/Snsr 11 target near*

4 Lbl 227 BITE Cmd-Bit 4 4 SRU Code (X,Y,Z) 4 P/Snsr 12 target near*

3 Lbl 227 BITE Cmd-Bit 5 3 <Not used, set to 0> 3 P/Snsr 13 target near*

2 Lbl 227 BITE Cmd-Bit 6 2 <Not used, set to 0> 2 P/Snsr 14 target near*

1 Lbl 227 BITE Cmd-Bit 7 1 <Not used, set to 0> 1 P/Snsr 15 target near*

0 <Not used, set to 0> 0 Control Fault* 0 P/Snsr 16 target near*

-------------------------------------------------------------------------------

* Bits marked with an asterisk are true for binary state 1 and false for binary

state 0.

Word 4
The flight phase and last BITE command are as received from the CFDS on ARINC label 227.

Word 5
The first 2 digits are the flight leg the fault was detected in. The current flight is 0 and the maximum value is 63.

The 3rd digit is the SRU code. This identifies the Shop Replaceable Unit where the fault has occurred.

-------------------------------------------------------

! SRU Code ! Hex value ! SRU !

-------------------------------------------------------

! X 3 External to the LGCIU !

! Y 2 Driver Card !

! Z 1 Control card !

-------------------------------------------------------

------------------------------------------------------------------------------

! Word 7 ! Word 8 ! Word 9 !

------------------------------------------------------------------------------

15 P/Sensor 17 target near* 15 P/Sensor 5 fault* 15 P/Sensor 21 fault*

14 P/Sensor 18 target near* 14 P/Sensor 6 fault* 14 P/Sensor 22 fault*

13 P/Sensor 19 target near* 13 P/Sensor 7 fault* 13 P/Sensor 23 fault*

12 P/Sensor 20 target near* 12 P/Sensor 8 fault* 12 P/Sensor 24 fault*

11 P/Sensor 21 target near* 11 P/Sensor 9 fault* 11 P/Sensor 25 fault*

10 P/Sensor 22 target near* 10 P/Sensor 10 fault* 10 P/Sensor 26 fault*

9 P/Sensor 23 target near* 9 P/Sensor 11 fault* 9 P/Sensor 27 fault*

8 P/Sensor 24 target near* 8 P/Sensor 12 fault* 8 P/Sensor 28 fault*

7 P/Sensor 25 target near* 7 P/Sensor 13 fault* 7 GND_PWR*

6 P/Sensor 26 target near* 6 P/Sensor 14 fault* 6 70KT*

5 P/Sensor 27 target near* 5 P/Sensor 15 fault* 5 SYS_SEL*

4 P/Sensor 28 target near* 4 P/Sensor 16 fault* 4 SELECT_IN*

3 P/Sensor 1 fault* 3 P/Sensor 17 fault* 3 DWN_SLT1*

2 P/Sensor 2 fault* 2 P/Sensor 18 fault* 2 DWN_SLT2*

1 P/Sensor 3 fault* 1 P/Sensor 19 fault* 1 UP_SLT1*

0 P/Sensor 4 fault* 0 P/Sensor 20 fault* 0 UP_SLT2*

-------------------------------------------------------------------------------

* Bits marked with an asterisk are true for binary state 1 and false for binary

state 0.

------------------------------------------------------------------------------

! Word 10 ! Word 11 ! Word 12 !

------------------------------------------------------------------------------

15 S_LGDM* 15 C_HIGH_SIDE_EN* 15 RHU_IND*

14 S_LGDP* 14 C_LOW_SIDE_EN* 14 NU_IND*

13 S_LGUM* 13 LBS* 13 LHD_IND*

12 S_LGUP* 12 ME1* 12 RHD_IND*

11 S_DCM* 11 ME2* 11 ND_IND*

10 S_DCP* 10 ME3* 10 LHC1*

9 S_DMO* 9 MC1* 9 LHC2*

8 S_DOP* 8 MC2* 8 RHC1*

7 D_DO+_STATUS* 7 MC3* 7 RHC2*

6 D_DO-_STATUS* 6 NUU* 6 RHU1*

5 D_DC+_STATUS* 5 NE1* 5 RHD1*

4 D_DC-_STATUS* 4 NE2* 4 ND1*

3 D_LGU+_STATUS* 3 NESC1* 3 ND2*

2 D_LGU-_STATUS* 2 CD_RLY* 2 LHC3*

1 D_LGD+_STATUS* 1 <reserved for FDR>* 1 LHC4*

0 D_LGD-_STATUS* 0 LHU_IND* 0 LHCG1*

------------------------------------------------------------------------------

* Bits marked with an asterisk are true for binary state 1 and false for binary

state 0.

------------------------------------------------------------------------------

! Word 13 ! Word 14 ! Word 15 !

------------------------------------------------------------------------------

15 RHC3* 15 RHE2* 15 28V Driver Card*

14 RHC4* 14 ME4* 14 5v Driver Card*

13 RHCG1* 13 NE3* 13 5V Control Card*

12 MC4* 12 CDF1* 12 3.3V Control Card*

11 MC5* 11 CDA1* 11 2.6V Control Card*

10 MC6* 10 SYS_OP1* 10 15V Control Card*

9 MCG1* 9 <reserved for FD1>* 9 MWDT_N*

8 NC1* 8 FDS* 8 PRSYNC*

7 NC2* 7 FD_SEL* 7 CS0_ERR*

6 NCG1* 6 FDSV* 6 GND_MAIN_OG*

5 LHD1* 5 CDSVF* 5 HW_INHIBIT*

4 MD1* 4 CDSVA* 4 FLT_INS_FAULT*

3 ND3* 3 CDSF* 3 SIM_FAULT*

2 LHE1* 2 CDSA* 2 MUX_FAULT*

1 LHE2* 1 <Not used, set to 0>* 1 LO_CF*

0 RHE1* 0 <Not used, set to 0>* 0 HI_CF*

------------------------------------------------------------------------------

* Bits marked with an asterisk are true for binary state 1 and false for binary

state 0.

The Proximity Sensor numbers used in words 6 to 9 relate to the sensor FINs as follows:

-----------------------------------------------------------------------------

! Prox-! Sensor FIN ! Position !

! !--------------------------------------------------------------------!

!Sensor!LGCIU 1 LGCIU2 ! LGCIU1 ! LGCIU2 !

-----------------------------------------------------------------------------

PS1 8GA 10GA ! Right Gear Uplocked Right Gear Uplocked

PS2 12GA 13GA ! Nose Gear Uplocked Nose Gear Uplocked

PS3 9GA 11GA ! Left Gear Uplocked Left Gear Uplocked

PS4 14GA 14GA ! Right Gear Downlocked Right Gear Downlocked

PS5 18GA 19GA ! Nose Gear Downlocked Nose Gear Downlocked

PS6 15GA 17GA ! Left Gear Downlocked Left Gear Downlocked

PS7 20GA 22GA ! R/Shock Absorber Extnd R/Shock Absorber Extnd

PS8 24GA 25GA ! Nose Shock Absorber Extnd Nose Shock Absorber Extnd

PS9 21GA 23GA ! L/Shock Absorber Extnd L/Shock Absorber Extnd

PS10 26GA 28GA ! Right Door Uplocked Right Door Uplocked

PS11 30GA 31GA ! Nose Doors Uplocked Nose Doors Uplocked

PS12 27GA 29GA ! Left Door Uplocked Left Door Uplocked

PS13 32GA 34GA ! Right Door Open Right Door Open

PS14 36GA 38GA ! Nose Right Door Open Nose Right Door Open

PS15 37GA 39GA ! Nose Left Door Open Nose Left Door Open

PS16 33GA 35GA ! Left Door Open Left Door Open

PS17 44GA 46GA ! Right Bogie Aligned Right Bogie Aligned

PS18 45GA 47GA ! Left Bogie Aligned Left Bogie Aligned

PS19 not used !

PS20 not used !

PS21 37CV 39CV ! Left Flap Disconnect Left Flap Disconnect

PS22 38CV 40CV ! Right Flap Disconnect Right Flap Disconnect

PS23 30WV 5MJ ! FWD Cargo Dr Safety Mech FWD Cargo Door Lockshaft

PS24 32WV 12MJ ! AFT Cargo Dr Safety Mech AFT Cargo Door Lockshaft

PS25 28WV N/U ! FWD Cargo Door Handle

PS26 34WV N/U ! AFT Cargo Door Handle

PS27 not used !

PS28 not used !

-----------------------------------------------------------------------------

*Used only for bogie MLG aircraft.

The table that follows shows the fault codes that can be found by each LGCIU by

one of the BITE monitors. The table has these headings:

- Fault code, the number that the trouble shooting data gives to find

a system fault

- Fault Description, the specified fault

- LGCIU 1 and LGCIU 2, the LGCIU that can find the fault. Not all faults will

occur on each LGCIU.

- Control Fault, a fault that causes the LGCIU to give up control of the

system to the other LGCIU.

- TSM procedure, the number of the TSM procedure given in 32-31-00 for the

specified fault.

- CFDS message, a number that identifies the message sent to the CMS when

the LGCIU identifies the fault. This is the message that appears in the PFR,

the Last Leg Report, Previous Legs Report, Ground Scanning, Ground Report

and on the Test Fail Page.

-----------------------------------------------------------------------------

Code Code Description LGCIU Control TSM CFDS

Hex 1 2 Fault Procedure message

number

-----------------------------------------------------------------------------

1 1 No CFDS Data 1 2 No 802 2

2 2 CFDS - Data Parity Fail 1 2 No 802 2

3 3 CFDS - Data SSM Fail 1 2 No 802 2

4 4 CFDS - Data Refresh F/ure 1 2 No 802 2

5 5 Reserved

6 6 Offside LGCIU Data - 1 2 No 802 41

Parity Failure or no

refresh failure on one

but not all LGCIU Labels

7 7 Reserved

8 8 Reserved

9 9 Offside Arinc 429 1 2 No 802 41

- No Data Received

by Offside LGCIU

10 A Reserved

11 B Reserved

12 C Reserved

13 D ARINC Bus 1 wraparound 1 2 No 889 66

Fault

14 E ARINC Bus 2 wraparound 1 2 No 889 102

Fault

15 F ARINC Bus 3 wraparound 1 2 No 889 103

16 10 ARINC inter-LGCIU bus 1 2 No 889 105

wraparound Fault

17 11 ARINC interface failures 1 2 No 802 1

18 12 reserved

19 13 reserved

20 14 Gear retract solenoid 1 2 Yes 806 3

short circuit

21 15 Gear extend solenoid 1 2 Yes 806 3

short circuit

22 16 Door Open solenoid 1 2 Yes 807 5

short circuit

23 17 Door Open solenoid 1 2 Yes 807 5

short circuit

24 18 Reserved

25 19 Reserved

26 1A Gear Retract solenoid 1 2 Yes 806 3

open circuit

27 1B Gear extend solenoid 1 2 Yes 806 3

open circuit

28 1C Door Open solenoid 1 2 Yes 807 3

open circuit

29 1D Door Close solenoid 1 2 Yes 807 3

open circuit

30 1E Reserved

31 1F Reserved

32 20 Gear Retract solenoid 1 2 Yes 802 1

drivers inconsistent

33 21 Gear Extend solenoid 1 2 Yes 802 1

drivers inconsistent

34 22 Door Open solenoid 1 2 Yes 802 1

drivers inconsistent

35 23 Door close solenoid 1 2 Yes 802 1

drivers inconsistent

36 24 reserved

37 25 reserved

38 26 Gear Retract solenoid 1 2 Yes 802 1

driver on when neutral

selected circuit

39 27 Gear Extend solenoid 1 2 Yes 802 1

driver on when neutral

selected circuit

40 28 Door Open solenoid 1 2 Yes 802 1

driver on when neutral

selectred circuit

41 29 Door Close solenoid 1 2 Yes 802 1

driver on when neutral

selected circuit

42 2A Reserved

43 2B Reserved

44 2C Gear Retract solenoid 1 2 Yes 802 1

driver on when outputs

disabled

45 2D Gear Extend solenoid 1 2 Yes 802 1

driver on when outputs

disabled

46 2E Door Open solenoid 1 2 Yes 802 1

driver on when outputs

disabled

47 2F Door Close solenoid 1 2 Yes 802 1

driver on when outputs

disabled

48 30 reserved

49 31 reserved

50 32 Gear Retract solenoid 1 2 Yes 802 1

monitor circuit failure

51 33 Gear Extend solenoid 1 2 Yes 802 1

monitor circuit failure

52 34 Door Open solenoid 1 2 Yes 802 1

monitor circuit failure

53 35 Door Close solenoid 1 2 Yes 802 1

monitor circuit failure

54 36 reserved

55 37 reserved

56 38 Baulk Solenoid short 1 2 No 809 14

circuit

57 39 reserved

58 3A Baulk Solenoid driver 1 2 No 802 1

active when on ground

59 3B Baulk Solenoid driver 1 2 No 802 1

inactive when in flight

60 3C reserved

61 3D LH main gear door 1 2 Yes 820 23

uplock locked (PS12)

proximity sensor/wiring

fault

62 3E RH main gear door 1 2 Yes 819 22

uplock locked (PS10)

proximity sensor/wiring

fault

63 3F Nose gear door uplock 1 2 Yes 821 24

locked (PS11) proximity

sensor/wiring fault

64 40 LH main gear door 1 2 Yes 817 19

fully open (PS16)

proximity sensor/wiring

fault

65 41 RH main gear door 1 2 Yes 816 18

fully open (PS13)

proximity sensor/wiring

fault

66 42 RH nose gear door 1 2 Yes 818 20

fully open (PS14)

proximity sensor/wiring

fault

67 43 LH nose gear door 1 2 Yes 818 21

fully open (PS15)

proximity sensor/wiring

fault

68 44 LH main gear unlocked 1 2 Yes 826 29

(PS3) proximity sensor/

wiring fault

69 45 RH main gear unlocked 1 2 Yes 825 28

(PS1) proximity sensor/

wiring fault

70 46 Nose gear unlocked 1 2 Yes 827 30

(PS2) proximity sensor/

wiring fault

71 47 LH main gear downlocked 1 2 Yes 823 26

(PS6) proximity sensor/

wiring fault

72 48 RH main gear downlocked 1 2 Yes 822 25

(PS4) proximity sensor/

wiring fault

73 49 Nose gear downlocked 1 2 Yes 824 27

(PS5) proximity sensor/

wiring fault

74 4A LH main gear shock 1 2 Yes 814 16

absorber extended (PS9)

proximity sensor/

wiring fault

75 4B RH main gear shock 1 2 Yes 813 15

absorber extended (PS7)

proximity sensor/

wiring fault

76 4C Nose gear shock 1 2 Yes 815 17

absorber extended (PS8)

proximity sensor/

wiring fault

77 4D LH main gear bogie 1 2 Yes 810 4

aligned (PS18)

proximity sensor/

wiring fault

78 4E RH main gear bogie 1 2 Yes 810 6

aligned (PS17)

proximity sensor/

wiring fault

79 4F FWD cargo door locking 1 No 830 31

handle locked (PS25)

proximity sensor/

wiring fault

(system 1 only)

80 50 AFT cargo door locking 1 No 831 32

handle locked (PS26)

proximity sensor/

wiring fault

(system 1 only)

81 51 FWD cargo door safety 1 No 832 33

mechanism locked (PS23)

proximity sensor/

wiring fault

(system 1 only)

82 52 AFT cargo door safety 1 No 833 34

mechanism locked (PS24)

proximity sensor/

wiring fault

(system 1 only)

83 53 FWD cargo door locking 2 No 834 35

shaft unlocked (PS23)

proximity sensor/

wiring fault

(system 2 only)

84 54 AFT cargo door locking 2 No 835 36

shaft unlocked (PS24)

proximity sensor/

wiring fault

(system 2 only)

85 55 LH flap aligned (PS21) 1 2 No 828 37

proximity sensor/

wiring fault

86 56 LH flap aligned (PS22) 1 2 No 829 38

proximity sensor/

wiring fault

87 57 reserved for (freighter)

proximity sensor failures

88 58 reserved for (freighter)

proximity sensor failures

89 59 reserved for (freighter)

proximity sensor failures

90 5A reserved for proximity

sensor failures

91 5B reserved for proximity

sensor failures

92 5C reserved for proximity

sensor failures

93 5D reserved for proximity

sensor failures

94 5E reserved for proximity

sensor failures

95 5F reserved for proximity

sensor failures

96 60 reserved for proximity

sensor failures

97 61 LH main gear door 1 2 No 837 52

uplock locked (PS12)

proximity sensor

disagree fault

98 62 RH main gear door 1 2 No 837 51

uplock locked (PS10)

proximity sensor

disagree fault

99 63 Nose gear door 1 2 No 837 53

uplock locked (PS11)

proximity sensor

disagree fault

100 64 LH main gear door 1 2 No 840 48

fully open (PS16)

proximity sensor

disagree fault

101 65 RH main gear door 1 2 No 840 47

fully open (PS13)

proximity sensor

disagree fault

102 66 RH nose gear door 1 2 No 840 49

fully open (PS14)

proximity sensor

disagree fault

103 67 LH nose gear door 1 2 No 840 50

fully open (PS15)

proximity sensor

disagree fault

104 68 LH main gear uplocked 1 2 No 837 58

(PS3) Proximity sensor

disagree fault

105 69 RH main gear uplocked 1 2 No 837 57

(PS1) Proximity sensor

disagree fault

106 6A Nose gear uplocked 1 2 No 837 59

(PS2) proximity sensor

disagree fault

107 6B LH main gear 1 2 No 896 55

downlocked (PS6)

proximity sensor

disagree fault

108 6C RH main gear 1 2 No 896 54

downlocked (PS4)

proximity sensor

disagree fault

109 6D Nose gear 1 2 No 896 56

downlocked (PS5)

proximity sensor

disagree fault

110 6E LH main gear shock 1 2 No 842 45

absorber extended

(PS9) proximity sensor

disagree fault

111 6F RH main gear shock 1 2 No 842 44

absorber extended

(PS7) proximity sensor

disagree fault

112 70 Nose gear shock 1 2 No 842 46

absorber extended

(PS8) proximity sensor

disagree fault

113 71 LH main gear bogie 1 2 No 810 42

aligned (PS18)

proximity sensor

disagree fault

114 72 RH main gear bogie 1 2 No 810 43

aligned (PS17)

proximity sensor

disagree fault

115 73 AFT cargo door 1 No 886 61

locking handle

locked (PS26)

proximity sensor

disagree fault

(system 1 only)

116 74 FWD cargo door 1 No 877 60

locking handle

locked (PS25)

proximity sensor

disagree fault

(system 1 only)

117 75 AFT cargo door 1 No 886 63

mechanism locked

(PS24) proximity sensor

disagree fault

(system 1 only)

118 76 AFT cargo door 2 No 886 65

locking shaft unlocked

(PS24) proximity sensor

disagree fault

(system 2 only)

119 77 FWD cargo door safety 1 No 877 62

mechanism locked

(PS23) proximity sensor

disagree fault

(system 1 only)

120 78 FWD cargo door 2 No 877 64

locking shaft unlocked

(PS23) proximity sensor

disagree fault

(system 2 only)

121 79 reserved for proximity

sensor disagree failures

122 7A reserved for proximity

sensor disagree failures

123 7B reserved for (freighter)

proximity sensor

disagree failures

124 7C reserved for (freighter)

proximity sensor

disagree failures

125 7D reserved for (freighter)

proximity sensor

disagree failures

126 7E reserved for proximity

sensor disagree failures

127 7F reserved for proximity

sensor disagree failures

128 80 reserved for proximity

sensor disagree failures

129 81 reserved for proximity

sensor disagree failures

130 82 reserved for proximity

sensor disagree failures

131 83 reserved for proximity

sensor disagree failures

132 84 reserved for proximity

sensor disagree failures

133 85 LH main gear door 1 2 No 857 120

not fully open during

extension/retraction

134 86 RH main gear door 1 2 No 858 119

not fully open during

extension/retraction

135 87 RH nose gear door 1 2 No 856 122

not fully open during

extension/retraction

136 88 LH nose gear door 1 2 No 856 121

not fully open during

extension/retraction

137 89 Retraction Inhibit 1 2 No 868 11

due to nose gear

shock absorber not

extended

138 8A Retraction Inhibit 1 2 No 811 12

due to left main

gear bogie alignment

139 8B Retraction Inhibit 1 2 No 811 13

due to right main

gear bogie alignment

140 8C reserved

141 8D reserved

142 8E NLG shock 1 2 No 868 11

absorber

'mechanical' failure

143 8F LH NLG shock 1 2 No 869 124

absorber

'mechanical' failure

144 90 RH NLG shock 1 2 No 870 123

absorber

'mechanical' failure

145 91 NLG LH door fully 1 2 No 856 111

open 'mechanical'

failure

146 92 NLG RH door fully 1 2 No 856 112

open 'mechanical'

failure

147 93 LH NLG door fully 1 2 No 857 110

open 'mechanical'

failure

148 94 RH NLG door fully 1 2 No 858 109

open 'mechanical'

failure

149 95 NLG door 1 2 No 859 118

uplock 'mechanical'

failure

150 96 LH NLG door 1 2 No 860 117

uplock 'mechanical'

failure

151 97 RH NLG door 1 2 No 861 116

uplock 'mechanical'

failure

152 98 NLG uplock 1 2 No 865 115

'mechanical' failure

153 99 LH NLG uplock 1 2 No 866 114

'mechanical' failure

154 9A RH NLG uplock 1 2 No 867 113

'mechanical' failure

155 9B NLG downlock 1 2 No 862 108

'mechanical' failure

156 9C LH NLG downlock 1 2 No 863 107

'mechanical' failure

157 9D RH NLG downlock 1 2 No 864 106

'mechanical' failure

158 9E LH main gear bogie 1 2 No 811 125

mechanism mechanical

failure

159 9F RH main gear bogie 1 2 No 811 126

mechanism mechanical

failure

160 A0 reserved

161 A1 reserved

162 A2 reserved

163 A3 reserved

164 A4 reserved

165 A5 reserved

166 A6 System ID input 1 2 No 894 132

inconsistent with

proximity sensors

167 A7 LGCIU fitted to an 1 2 No 890 104

aircraft with bogie

landing gears

168 A8 Bogie fitted input 1 2 Yes 894 128

inconsistent with

proximity sensors

169 A9 reserved for (freighter)

pin-programming input

failures

170 AA Selector lever 1 2 Yes 809 14

UP inputs

inconsistent

171 AB Selector lever 1 2 Yes 809 14

DOWN inputs

inconsistent

172 AC UP and DOWN 1 2 Yes 809 14

selected

173 AD GPWR and 70kts 1 2 Yes 893 131

inputs inconsistent

174 AE reserved

175 AF reserved

176 B0 reserved

177 B1 reserved

178 B2 reserved

179 B3 reserved

180 B4 reserved

181 B5 reserved

182 B6 LH main gear door 1 2 Yes 802 1

uplock locked (PS12)

proximity sensor

interface

channel fault

183 B7 RH main gear door 1 2 Yes 802 1

uplock locked (PS10)

proximity sensor

interface

channel fault

184 B8 Nose gear door 1 2 Yes 802 1

uplock locked (PS11)

proximity sensor

interface

channel fault

185 B9 LH main gear door 1 2 Yes 802 1

fully open (PS16)

proximity sensor

interface

channel fault

186 BA RH main gear door 1 2 Yes 802 1

fully open (PS13)

proximity sensor

interface

channel fault

187 BB RH nose gear door 1 2 Yes 802 1

fully open (PS14)

proximity sensor

interface

channel fault

188 BC LH nose gear door 1 2 Yes 802 1

fully open (PS15)

proximity sensor

interface

channel fault

189 BD LH main gear 1 2 Yes 802 1

uplocked (PS3)

proximity sensor

interface

channel fault

190 BE RH main gear 1 2 Yes 802 1

uplocked (PS1)

proximity sensor

interface

channel fault

191 BF Nose gear 1 2 Yes 802 1

uplocked (PS1)

proximity sensor

interface

channel fault

192 C0 LH main gear 1 2 Yes 802 1

downlocked (PS6)

proximity sensor

interface

channel fault

193 C1 RH main gear 1 2 Yes 802 1

downlocked (PS4)

proximity sensor

interface

channel fault

194 C2 Nose gear 1 2 Yes 802 1

downlocked (PS5)

proximity sensor

interface

channel fault

195 C3 LH main gear shock 1 2 Yes 802 1

absorber extended

(PS9) proximity sensor

interface channel fault

196 C4 RH main gear shock 1 2 Yes 802 1

absorber extended

(PS7) proximity sensor

interface channel fault

197 C5 Nose gear shock 1 2 Yes 802 1

absorber extended

(PS8) proximity sensor

interface channel fault

198 C6 LH main gear bogie 1 2 Yes 802 1

aligned (PS18)

proximity sensor

interface

channel fault

199 C7 RH main gear bogie 1 2 Yes 802 1

aligned (PS17)

proximity sensor

interface

channel fault

200 C8 AFT cargo door 1 No 802 1

locking handle

locked (PS26) proximity

sensor interface

channel fault

(system 1 only)

201 C9 FWD cargo door 1 No 802 1

locking handle

locked (PS25) proximity

sensor interface

channel fault

(system 1 only)

202 CA AFT cargo door safety 1 No 802 1

mechanism locked

(PS24) proximity sensor

interface channel

fault (system 1 only)

203 CB FWD cargo door safety 1 No 802 1

mechanism locked

(PS23) proximity sensor

interface channel

fault (system 1 only)

204 CC AFT cargo door locking 2 No 802 1

shaft unlocked (PS24)

proximity sensor interface

channel fault

(system 2 only)

205 CD FWD cargo door locking 2 No 802 1

shaft unlocked (PS23)

proximity sensor

interface channel fault

(system 2 only)

206 CE LH flap aligned (PS21) 1 2 Yes 802 1

proximity sensor

interface channel fault

207 CF RH flap aligned (PS22) 1 2 Yes 802 1

proximity sensor

interface channel fault

208 D0 reserved for (freighter)

proximity sensor

interface channel fault

209 D1 reserved for (freighter)

proximity sensor

interface channel fault

210 D2 reserved for (freighter)

proximity sensor

interface channel fault

211 D3 reserved for proximity

sensor interface

channel failures

212 D4 reserved for proximity

sensor interface

channel failures

213 D5 reserved for proximity

sensor interface

channel failures

214 D6 reserved for proximity

sensor interface

channel failures

215 D7 reserved for proximity

sensor interface

channel failures

216 D8 proximity sensor 1 2 No 802 1

interface interrupt

failure

217 D9 Proximity Sensor 1 2 Yes 802 1

interface bus

failure - No data

or Corrupted Data

218 DA Proximity Sensor 1 2 Yes 802 1

interface bus

failure

219 DB Cargo door relay 2 No 802 1

output not in

expected state fault

220 DC reserved for (freighter)

output failures

221 DD reserved

222 DE reserved

223 DF SYSOP interface 1 2 No 802 1

signal, pin AA-12E,12F

224 E0 LH and RH Gear 1 2 No 802 1

compressed interface

signal (MC1) fault,

pin AA-14A

225 E1 LH and RH Gear 1 2 No 802 1

compressed interface

signal (MC2) fault,

pin AA-15A

226 E2 LH and RH Gear 1 2 No 802 1

compressed interface

signal (MC3) fault,

pin AA-15B

227 E3 LH and RH Gear 1 2 No 802 1

compressed interface

signal (MC4) fault,

pins AB-1A, 1B, 2A,

2B, 3A, 3B, 4A, 4B

228 E4 LH and RH Gear 1 2 No 802 1

compressed interface

signal (MC5) fault,

pins AB-1C, 1D, 2C,

2D, 3D

229 E5 LH and RH Gear 1 2 No 802 1

compressed interface

signal (MC6) fault,

pins AB-3C, 4C, 4D,

5C, 5D, 3E

230 E6 LH and RH Gear 1 2 No 802 1

compressed interface

signal (MCG1) fault,

pins AA-10K, 10J,

11K, 11J

231 E7 LH and RH Gear 1 2 No 802 1

extended interface

signal (ME1) fault,

pin AA-10D

232 E8 LH and RH Gear 1 2 No 802 1

extended interface

signal (ME2) fault,

pin AA-11D

233 E9 LH and RH Gear 1 2 No 802 1

extended interface

signal (ME3) fault,

pin AA-12D

234 EA LH and RH Gear 1 2 No 802 1

extended interface

signal (ME4) fault,

pins AB-12K, 12J,

12G, 12H

235 EB LH and RH Gear 1 2 No 802 1

downlocked interface

signal (MD1) fault,

pins AB-6J, 6K, 7J, 7K

236 EC LH Gear compressed 1 2 No 802 1

interface signal

(LHC1) fault,

pins AB-1H, 2H, 3H, 4H

237 ED LH Gear compressed 1 2 No 802 1

interface signal

(LHC2) fault,

pin AB-15K only

238 EE LH Gear compressed 1 2 No 802 1

interface signal

(LHC3) fault,

pin AB-15J only

239 EF LH Gear compressed 1 2 No 802 1

interface signal

(LHC4) fault,

pins AB-1F, 1G, 2F,

2G, 3F, 3G, 4F, 4G

240 F0 LH Gear compressed 1 2 No 802 1

interface signal

(LHCG1) fault,

pins AB-14A, 14B,

14C, 14D

241 F1 LH Gear extended 1 2 No 802 1

interface signal

(LHE1) fault,

pins AB-6C, 7C,

6D, 7D, 6E, 7E

242 F2 LH Gear extended 1 2 No 802 1

interface signal

(LHE2) fault,

pins AB-8C, 9C,

8D, 9D, 10D, 8E,

9E, 10E

243 F3 LH Gear Downlocked 1 2 No 802 1

interface signal

(LHD1) fault,

pins AB-6F, 7F, 6G, 7G

244 F4 RH Gear compressed 1 2 No 802 1

interface signal

(RHC1) fault,

pin AB-13K

245 F5 RH Gear compressed 1 2 No 802 1

interface signal

(RHC2) fault,

pin AB-13J

246 F6 RH Gear compressed 1 2 No 802 1

interface signal

(RHC3) fault,

pins AB-1J, 1K, 2J,

2K, 3J, 3K, 4J, 4K

247 F7 Reserved for Right

Gear compressed

interface signal

(RHC4) fault, pins

AB-13F, 13G, 13H, 14F

248 F8 RH Gear compressed 1 2 No 802 1

interface signal

(RHCG1) fault,

pins AB-14E, 13E,

13D, 13C

249 F9 RH Gear extended 1 2 No 802 1

interface signal

(RHE1) fault,

pins AB-8J, 8K, 9J,

9K, 10J, 10K

250 FA RH Gear extended 1 2 No 802 1

interface signal

(RHE2) fault,

pins AB-8G, 8H, 9G,

9H, 10G, 10H

251 FB RH Gear locked up 1 2 No 802 1

interface signal

(RHU1) fault,

pin AA-9G

252 FC RH Gear Downlocked 1 2 No 802 1

interface signal

(RHD1) fault,

pin AA-11G

253 FD Nose Gear compressed 1 2 No 802 1

interface signal

(NC1) fault,

pins AB-6A, 6B, 7A,

7B, 8A, 8B, 9A, 9B

254 FE Reserved for Nose

Gear compressed

interface signal

fault, pins AB-5E,

5F, 5G, 5J, 5K

255 FF Nose Gear extended 1 2 No 802 1

interface signal

(NCG1) fault,

pins AB-15A, 15B,15C,

15C, 15D

256 100 Nose Gear extended 1 2 No 802 1

interface signal

(NE1) fault,

pin AA-10A

257 101 Nose Gear extended 1 2 No 802 1

interface signal

(NE2) fault,

pin AA-11A

258 102 Nose Gear extended 1 2 No 802 1

interface signal

(NE3) fault,

pins AB-14K, 14H,

14J, 14G

259 103 Nose Gear extended 1 2 No 802 1

interface signal

(NESC) fault,

pins AA-10F

260 104 Nose Gear not locked 1 2 No 802 1

up interface signal

(NUU) fault,

pin AB-11D

261 105 Nose Gear Downlocked 1 2 No 802 1

interface signal

(ND1) fault detected

during BITE, pins

AB-11K

262 106 Nose Gear Downlocked 1 2 No 802 1

interface signal

(ND2) fault,

pin AB-11J

263 107 Nose Gear Downlocked 1 2 No 802 1

interface signal

(ND3) fault,

pins AB-12A. 12B,

13A, 13B

264 108 Aft cargo door 1 No 802 1

interface signal

(CDA1) fault,

pin AB-11B

(LGCIU1 only).

265 109 FWD cargo door 1 No 802 1

interface signal

(CDF1) fault,

pin AB-11A

(LGCIU1 only).

266 10A reserved for

(freighter) output

failures

267 10B reserved for

interface signal

failures

268 10C reserved for

interface signal

failures

269 10D reserved for

interface signal

failures

270 10E reserved for

interface signal

failures

271 10F reserved for

interface signal

failures

272 110 Nose Gear Unlocked 1 No 802 1

Lamp Drive fault

(system 1 only)

273 111 LH Main Gear 1 No 802 1

Unlocked Lamp Drive

fault (system 1 only)

274 112 RH Main Gear 1 No 802 1

Unlocked Lamp Drive

fault (system 1 only)

275 113 Nose Gear Downlocked 1 No 802 1

Lamp Drive fault

(system 1 only)

276 114 LH Main Gear 1 No 802 1

Downlocked Lamp Drive

fault (system 1 only)

277 115 RH Main Gear 1 No 802 1

Downlocked Lamp Drive

fault (system 1 only)

278 116 Reserved for processing

system faults

279 117 Reserved for processing

system faults

280 118 Reserved for processing

system faults

281 119 Reserved for processing

system faults

282 11A Reserved for processing

system faults

283 11B Reserved for processing

system faults

284 11C Software Overrun 1 2 Yes 802 1

285 11D Simulation Data Serial 1 2 No 802 1

Interface

286 11E Control Card 1 2 Yes 802 1

Monitor Data

Serial Interface

287 11F Reserved for processing 1 2 Yes 802 1

system faults

288 120 Driver Card 1 2 Yes 802 1

Serial Interface

289 121 Simulation Commands 1 2 Yes 802 1

Inconsistent

290 122 Fault Insertion 1 2 Yes 802 1

Commands Inconsistent

291 123 Hardware/Software 1 2 Yes 802 1

Incompatibility

292 124 Flight Software 1 2 Yes 802 1

ROM Fault

293 125 Boot Software ROM 1 2 Yes 802 1

Fault

294 126 TPU Software ROM 1 2 Yes 802 1

Fault

295 127 Unexpected exception 1 2 Yes 802 1

fault

296 128 Driver Card Monitoring 1 2 Yes 802 1

Circuitry Failure

297 129 Internal RAM Fault 1 2 Yes 802 1

298 12A External RAM Fault 1 2 Yes 802 1

299 12B Software Error Fault 1 2 Yes 802 1

300 12C Reserved for

processing system

faults

301 12D NVM Fault 1 2 Yes 802 1

302 12E NVM Initialization 1 2 Yes 802 1

Fault

303 12F Reserved for

processing system

faults

304 130 Watchdog failure - 1 2 Yes 802 1

processor not reset

during watchdog test

305 131 Watchdog failure - 1 2 Yes 802 1

processor not reset

306 132 Watchdog unexpected 1 2 No 892 1

reset

307 133 Watchdog error count 1 2 Yes 802 1

308 134 reserved

309 135 Select output 1 2 Yes 802 1

failed inactive

310 136 Select output 1 2 No 802 1

failed active

311 137 Both LGCIUs 1 2 No 804 129

simultaneously

active

312 138 Control changeover 1 2 No 804 130

fault

313 139 Select Output Voltage 1 2 Yes 802 1

out of range

314 13A Power supply interrupt 1 2 No 891 127

315 13B High side driver 28V 1 2 Yes 802 1

power supply failure

316 13C Driver card +5V 1 2 Yes 802 1

supply

317 13D Driver card +15V 1 2 Yes 802 1

supply

318 13E Control card +5V 1 2 Yes 802 1

supply

319 13F Control card +2.6V 1 2 Yes 802 1

supply

320 140 Control card +3.3V 1 2 Yes 802 1

supply

321 141 Control card +/-15V 1 2 Yes 802 1

supply

322 142 Reserved for internal

power supply failures

323 143 Reserved for internal

power supply failures

324 144 Reserved for internal

power supply failures

325 145 Proximity Sensor 1 2 Yes 802 1

Interface clock

Drift

326 146 Solenoid Enable 1 2 Yes 802 1

test failed

327 147 "NEW" - Solenoid 1 2 Yes 802 1

Enable (software)

fault

328 148 Solenoid Enabled 1 2 Yes 802 1

(hardware)

fault

329 149 PSI Watchdog test 1 2 Yes 802 1

failed fault

330 14A Digital Pot Refresh - 1 2 Yes 802 1

PRSYNC failed high

331 14B Digital Pot Refresh - 1 2 Yes 802 1

PRSYNC failed low

332 14C Digital Pot failure - 1 2 Yes 802 1

proximity sensors

interface

333 14D Digital Pot failure - 1 2 Yes 802 1

proximity sensors

interface

channels group 2

334 14E Digital Pot failure - 1 2 Yes 802 1

proximity sensors

interface

channels group 3

335 14F Digital Pot failure - 1 2 Yes 802 1

proximity sensors

interface

channels group 4

336 150 Digital Pot failure - 1 2 Yes 802 1

proximity sensors

interface

channels group 5

337 151 Digital Pot failure - 1 2 Yes 802 1

proximity sensors

interface

channels group 6

338 152 Digital Pot failure - 1 2 Yes 802 1

proximity sensors

interface

channels group 7

339 153 Reserved for dormancy

check failures

340 154 Reserved for dormancy

check failures

341 155 Reserved for dormancy

check failures

342 156 Reserved for dormancy

check failures

343 157 Reserved for dormancy

check failures

344 158 Reserved for dormancy

check failures

345 159 LH main gear door 1 2 Yes 820 23

uplock locked (PS12)

proximity sensor open

circuit

346 15A RH main gear door 1 2 Yes 819 22

uplock locked (PS10)

proximity sensor open

circuit

347 15B Nose gear door 1 2 Yes 821 24

uplock locked (PS11)

proximity sensor open

circuit

348 15C LH main gear door 1 2 Yes 817 19

fully open (PS16)

proximity sensor open

circuit

349 15D RH main gear door 1 2 Yes 816 18

fully open (PS13)

proximity sensor open

circuit

350 15E RH nose gear door 1 2 Yes 818 20

fully open (PS14)

prox sensor open

circuit

351 15F LH nose gear door 1 2 Yes 818 21

fully open (PS15)

proximity sensor open

circuit

352 160 LH main gear 1 2 Yes 826 29

uplocked (PS3)

proximity sensor open

circuit

353 161 RH main gear 1 2 Yes 825 28

uplocked (PS1)

proximity sensor open

circuit

354 162 Nose gear 1 2 Yes 827 30

uplocked (PS1)

proximity sensor open

circuit

355 163 LH main gear 1 2 Yes 823 26

downlocked (PS6)

proximity sensor open

circuit

356 164 RH main gear 1 2 Yes 822 25

downlocked (PS4)

proximity sensor open

circuit

357 165 Nose gear 1 2 Yes 824 27

downlocked (PS5)

proximity sensor open

circuit

358 166 LH main gear shock 1 2 Yes 814 16

absorber extended

(PS9) proximity sensor

open circuit

359 167 RH main gear shock 1 2 Yes 813 15

absorber extended

(PS7) proximity sensor

open circuit

360 168 Nose gear shock 1 2 Yes 815 17

absorber extended

(PS8) proximity sensor

open circuit

361 169 LH main gear bogie 1 2 Yes 810 4

aligned (PS18)

proximity sensor

open circuit

362 16A RH main gear bogie 1 2 Yes 810 6

aligned (PS17)

proximity sensor

open circuit

363 16B FWD cargo door 1 Yes 830 31

locking handle

locked (PS25) proximity

sensor open circuit

364 16C AFT cargo door 1 Yes 831 32

locking handle

locked (PS26) proximity

sensor open circuit

365 16D FWD cargo door 1 Yes 832 33

safety mechanism

locked (PS23) proximity

sensor open circuit

366 16E AFT cargo door 1 Yes 833 34

safety mechanism

locked (PS24) proximity

sensor open circuit

367 16F FWD cargo door 2 Yes 834 35

locking shaft

unlocked (PS23)

proximity sensor

open circuit

368 170 AFT cargo door 2 Yes 835 36

locking shaft

unlocked (PS24)

proximity sensor

open circuit

369 171 LH flap aligned 1 2 Yes 828 37

(PS21) proximity

sensor open circuit

370 172 RH flap aligned 1 2 Yes 829 38

(PS22) proximity

sensor open circuit

371 173 reserved

372 174 reserved

373 175 reserved

374 176 reserved

375 177 reserved

376 178 reserved

377 179 reserved

378 17A reserved

379 17B reserved

380 17C reserved

381 17D LH main gear door 1 2 Yes 820 23

uplock locked (PS12)

proximity sensor short

circuit

382 17E RH main gear door 1 2 Yes 819 22

uplock locked (PS10)

proximity sensor short

circuit

383 17F Nose gear door 1 2 Yes 821 24

uplock locked (PS11)

proximity sensor short

circuit

384 180 LH main gear door 1 2 Yes 817 19

fully open (PS16)

proximity sensor short

circuit

385 181 RH main gear door 1 2 Yes 816 18

fully open (PS13)

proximity sensor short

circuit

386 182 RH nose gear door 1 2 Yes 818 20

fully open (PS14)

proximity sensor short

circuit

387 183 LH nose gear door 1 2 Yes 818 21

fully open (PS15)

proximity sensor short

circuit

388 184 LH main gear 1 2 Yes 826 29

uplocked (PS3)

proximity sensor short

circuit

389 185 RH main gear 1 2 Yes 825 28

uplocked (PS1)

proximity sensor short

circuit

390 186 Nose gear 1 2 Yes 827 30

uplocked (PS2)

proximity sensor short

circuit

391 187 LH main gear 1 2 Yes 823 26

downlocked (PS6)

proximity sensor short

circuit

392 188 RH main gear 1 2 Yes 822 25

downlocked (PS4)

proximity sensor short

circuit

393 189 Nose gear 1 2 Yes 824 27

downlocked (PS5)

proximity sensor short

circuit

394 18A LH main gear shock 1 2 Yes 814 16

absorber extended

(PS9) proximity sensor

short circuit

395 18B RH main gear shock 1 2 Yes 813 15

absorber extended

(PS7) proximity sensor

short circuit

396 18C Nose gear shock 1 2 Yes 815 17

absorber extended

(PS8) proximity sensor

short circuit

397 18D LH main gear bogie 1 2 Yes 810 4

aligned (PS18)

proximity sensor

short circuit

398 18E RH main gear bogie 1 2 Yes 810 6

aligned (PS17)

proximity sensor

short circuit

399 18F FWD cargo door 1 No 830 31

locking handle

locked (PS25)

proximity sensor short

circuit

400 190 AFT cargo door 1 No 831 32

locking handle

locked (PS26)

proximity sensor short

circuit

401 191 FWD cargo door 1 No 832 33

safety mechanism

locked (PS23)

proximity sensor short

circuit

402 192 AFT cargo door 1 No 833 34

safety mechanism

locked (PS24)

proximity sensor short

circuit

403 193 FWD cargo door 2 No 834 35

locking shaft

unlocked (PS23)

proximity sensor short

circuit

404 194 AFT cargo door 2 No 835 36

locking shaft

unlocked (PS24)

proximity sensor short

circuit

405 195 LH flap aligned 1 2 No 828 37

(PS21) proximity sensor

short circuit

406 196 RH flap aligned 1 2 No 829 38

(PS22) proximity sensor

short circuit

407 197 reserved

408 198 reserved

409 199 reserved

410 19A reserved

411 19B reserved

412 19C reserved

413 19D reserved

414 19E reserved

415 19F reserved

416 1A0 reserved

417 1A1 SYSOP interface 1 2 No 802 1

signal over-current/

over-temperature

fault, pin AA-12F,

418 1A2 LH and RH Gear 1 2 No 802 1

compressed interface

signal (MC1) over-

current/over-

temperature fault,

pin AA-14A

419 1A3 LH and RH Gear 1 2 No 802 1

compressed interface

signal (MC2) over-

current/over-

temperature fault,

pin AA-15A

420 1A4 LH and RH Gear 1 2 No 802 1

compressed interface

signal (MC3) over-

current/over-

temperature fault,

pin AA-15B

421 1A5 LH and RH Gear 1 2 No 802 1

compressed interface

signal (MC4) over-

current/over-

temperature fault,

pins AB-1A, 1B, 2A, 2B,

3A, 3B, 4A, 4B

422 1A6 LH and RH Gear 1 2 No 802 1

compressed interface

signal (MC5) over-

current/over-

temperature fault,

pins AB-1C, 1D, 2C,

2D, 3D

423 1A7 LH and RH Gear 1 2 No 802 1

compressed interface

signal (MC6) over-

current/over-

temperature fault,

pins AB-3C, 4C, 4D,

5C, 5D, 3E

424 1A8 LH and RH Gear 1 2 No 802 1

compressed interface

signal (MCG1) over-

current/over-

temperature fault,

pins AA-10K, 10J,

11K, 11J

425 1A9 LH and RH Gear 1 2 No 802 1

extended interface

signal (ME1) over-

current/over-

temperature fault,

pin AA-10D

426 1AA LH and RH Gear 1 2 No 802 1

extended interface

signal (ME2) over-

current/over-

temperature fault,

pin AA-11D

427 1AB LH and RH Gear 1 2 No 802 1

extended interface

signal (ME3) over-

current/over-

temperature fault,

pin AA-12D

428 1AC LH and RH Gear 1 2 No 802 1

extended interface

signal (ME4) over-

current/over-

temperature fault,

pins AB-12K, 12J,

12G, 12H

429 1AD LH and RH Gear 1 2 No 802 1

Downlocked interface

signal (MD1) over-

current/over-

temperature fault,

pins AB-6J, 6K,

7J, 7K

430 1AE LH Gear compressed 1 2 No 802 1

interface signal

(LHC1) over-current/

over-temperature

fault, pins AB-1H,

2H, 3H, 4H

431 1AF LH Gear compressed 1 2 No 802 1

interface signal

(LHC2) over-current/

over-temperature

fault, pin AB-15K

only

432 1B0 LH Gear compressed 1 2 No 802 1

interface signal

(LHC3) over-current/

over-temperature

fault, pin AB-15J

only

433 1B1 LH Gear compressed 1 2 No 802 1

interface signal

(LHC4) over-current/

over-temperature

fault, pins AB-1F,

1G, 2F, 2G, 3F, 3G,

4F, 4G

434 1B2 LH Gear compressed 1 2 No 802 1

interface signal

(LHCG1) over-current/

over-temperature

fault, pins AB-14A,

14B, 14C, 14D

435 1B3 LH Gear extended 1 2 No 802 1

interface signal

(LHE1) over-current/

over-temperature

fault, pins AB-6C,

7C, 6D, 7D, 6E, 7E

436 1B4 LH Gear extended 1 2 No 802 1

interface signal

(LHE2) over-current/

over-temperature

fault, pins AB-8C,

9C, 8D, 9D, 10D, 8E,

9E, 10E

437 1B5 LH Gear Downlocked 1 2 No 802 1

interface signal

(LHD1) over-current/

over-temperature

fault, pins AB-6F,

7F, 6G, 7G

438 1B6 RH Gear compressed 1 2 No 802 1

interface signal

(RHC1) over-current/

over-temperature

fault, pin AB-13K

439 1B7 RH Gear compressed 1 2 No 802 1

interface signal

(RHC2) over-current/

over-temperature

fault, pin AB-13J

440 1B8 RH Gear compressed 1 2 No 802 1

interface signal

(RHC3) over-current/

over-temperature

fault, pins AB-1J,

1K, 2J, 2K, 3J, 3K,

4J, 4K

441 1B9 Reserved for Right

Gear compressed

interface signal

(RHC4) over-current/

over-temperature

fault, pins AB-13F,

13G, 13H, 14F

442 1BA RH Gear compressed 1 2 No 802 1

interface signal

(RHCG1) over-current/

over-temperature

fault, pins AB-14E,

13E, 13D, 13C

443 1BB RH Gear extended 1 2 No 802 1

interface signal

(RHE1) over-current/

over-temperature

fault, pins AB-8J,

8K, 9J, 9K, 10J, 10K

444 1BC RH Gear extended 1 2 No 802 1

interface signal

(RHE2) over-current/

over-temperature

fault, pins AB-8G,

8H, 9G, 9H, 10G, 10H

445 1BD RH Gear locked up 1 2 No 802 1

interface signal

(RHU1) over-current/

over-temperature

fault, pin AA-9G

446 1BE RH Gear Downlocked 1 2 No 802 1

interface signal

(RHD1) over-current/

over-temperature

fault, pin AA-11G

447 1BF Nose Gear compressed 1 2 No 802 1

interface signal

(NC1) over-current/

over-temperature

fault, pins AB-6A,

6B, 7A, 7B, 8A, 8B,

9A, 9B

448 1C0 Reserved for Nose

Gear compressed

interface signal

over-current/

over-temperature

fault, pins AB-5E,

5F, 5G, 5J, 5K

449 1C1 Nose Gear compressed 1 2 No 802 1

interface signal

(NCG1) over-current/

over-temperature

fault, pins AB-15A,

15B, 15C, 15D

450 1C2 Nose Gear extended 1 2 No 802 1

interface signal

(NE1) over-current/

over-temperature

fault, pin AA-10A

451 1C3 Nose Gear extended 1 2 No 802 1

interface signal

(NE2) over-current/

over-temperature

fault, pin AA-11A

452 1C4 Nose Gear extended 1 2 No 802 1

interface signal

(NE3) over-current/

over-temperature

fault, pins AB-14K,

14H, 14J, 14G

453 1C5 Nose Gear extended 1 2 No 802 1

interface signal

(NESC) over-current/

over-temperature

fault, pin AA-10F

454 1C6 Nose Gear not locked 1 2 No 802 1

up interface signal

(NUU) over-current/

over-temperature

fault, pin AB-11D

455 1C7 Nose Gear Downlocked 1 2 No 802 1

interface signal

(ND1) over-current/

over-temperature

fault, pin AB-11K

456 1C8 Nose Gear Downlocked 1 2 No 802 1

interface signal

(ND2) over-current/

over-temperature

fault, pin AB-11J

457 1C9 Nose Gear Downlocked 1 2 No 802 1

interface signal

(ND3) over-current/

over-temperature

fault, pins AB-12A,

12B, 13A, 13B

458 1CA Aft cargo door 1 2 No 802 1

interface signal

(CDA1) over-current/

over-temperature

fault, pin AB-11B

(LGCIU1 only)

459 1CB FWD cargo door 1 2 No 802 1

interface signal

(CDF1) over-current/

over-temperature

fault, pin AB-11A

(LGCIU1 only)

460 1CC reserved

461 1CD reserved

462 1CE reserved

463 1CF reserved

464 1D0 reserved

465 1D1 reserved

466 1D2 Nose Gear Unlocked 1 2 No 802 1

Lamp drive

over-current/

over-temperature

fault (system 1

only)

467 1D3 LH Main Gear 1 2 No 802 1

Unlocked Lamp drive

over-current/

over-temperature

fault (system 1

only)

468 1D4 RH Main Gear 1 2 No 802 1

Unlocked Lamp drive

over-current/

over-temperature

fault (system 1

only)

469 1D5 Nose Gear Downlocked 1 2 No 802 1

Lamp drive

over-current/

over-temperature

fault (system 1

only)

470 1D6 LH Main Gear 1 2 No 802 1

Downlocked Lamp

drive over-current/

over-temperature

fault (system 1

only)

471 1D7 RH Main Gear 1 2 No 802 1

Downlocked Lamp

drive over-current/

over-temperature

fault (system 1

only)

472 1D8 reserved

473 1D9 reserved

474 1DA reserved

475 1DB reserved

476 1DC reserved

477 1DD Cargo door relay 1 2 No 802 1

output over-current/

over-temperature

fault

478 1DE reserved

479 1DF reserved

480 1E0 reserved

481 1E1 Gear Retract 1 2 Yes 802 1

selector valve

solenoid sequencing

inconsistant fault

482 1E2 Gear Extend 1 2 Yes 802 1

selector valve

solenoid sequencing

inconsistant fault

483 1E3 Door Open 1 2 Yes 802 1

selector valve

solenoid sequencing

inconsistant fault

484 1E4 Door Close 1 2 Yes 802 1

selector valve

solenoid sequencing

inconsistant fault

485 1E5 reserved

486 1E6 reserved

487 1E7 reserved

488 1E8 reserved

489 1E9 reserved

490 1EA reserved

491 1EB reserved

492 1EC reserved

493 1ED selector valve 1 2 Yes 809 14

solenoid sequencing

input-HS fault

494 1EE selector valve 1 2 Yes 809 14

solenoid sequencing

input-LS fault

495 1EF reserved

496 1F0 reserved

497 1F1 reserved

498 1F2 reserved

499 1F3 UP_SLT(1) input 1 2 No 809 14

voltage out of

range fault

500 1F4 UP_SLT(2) input 1 2 No 809 14

voltage out of

range fault

501 1F5 DWN_SLT(1) input 1 2 No 802 1

voltage out of

range fault

502 1F6 DWN_SLT(2) input 1 2 No 802 1

voltage out of

range fault

503 1F7 CDSVF input voltage 1 2 No 802 1

out of range fault

504 1F8 CDSVA input voltage 1 2 No 802 1

out of range fault

505 1F9 B_SEL input voltage 1 2 Yes 802 1

out of range fault

506 1FA SYS_SEL input voltage 1 2 No 802 1

out of range fault

507 1FB GND_PWR input voltage 1 2 No 802 1

out of range fault

508 1FC 70KT input voltage 1 2 No 802 1

out of range fault

509 1FD CDSF input voltage 1 2 No 897 1

out of range fault

510 1FE CDSA input voltage 1 2 No 897 1

out of range fault

511 1FF SELECT_ IN input 1 2 No 802 1

voltage out of

range fault

------------------------------------------------------------------------

** ON A/C NOT FOR ALL

3. Trouble shooting LGCIU discrete output faults

A. Procedure

(1) The procedure that follows gives a standard fault confirmation/isolation for all LGCIU discrete circuit faults.

(a) Look at the AVIONICS STATUS page.

(b) If the avionics status report shows a group of LRU's with external class 1, 2 or class 3 faults, access the relevant system report to find if the message is LGCIU related.

(d) Go to the ASM to find the LRU to transistor drive group correlation. The ASM 326201S01 and the ASM 326202S01 gives the equipment interconnection and group details.

(e) If the faulty LRU's group to a 'ONE' function or an 'AND' function transistor marker (e.g MC 4 or LHC 3 ), then the fault is with the LGCIU.

(f) If the faulty LRU's group to a 'ONE' function and to an 'AND' function (e.g MC 4 and RHC 3) then the fault is with a proximity sensor.

(g) To find the identity of the failed proximity sensor.

(h) Use the ASM 323103S01, to correlate the LRU's to the 'ONE' and the 'AND' functions of the LGCIU to find the failed proximity sensor.

(i) If there is only one LRU fault to a 'ONE' function or to an 'AND' function, then the fault is with the LRU.

** ON A/C NOT FOR ALL

4. Trouble Shooting a Proximity Sensor

A. Procedure

(1) The test equipment used is:

The UNIT-TEST,SENSOR (38-368-02) or the UNIT-TEST,SENSOR (38-368-03)
The ELDEC calibration target GO GAUGE (8-751-01).

(2) To test a proximity sensor:

(a) Disconnect the electrical connector from the applicable sensor.

(b) Connect the terminals of the test box to pins A and B of the applicable sensor (use a two wire lead terminated at one end with a ASNE0052R883ASNE connector or equivalent).

(d) The UNIT-TEST,SENSOR (38-368-02) or the UNIT-TEST,SENSOR (38-368-03) must show TARGET FAR.

(e) Let the calibrated target touch the proximity sensor.

(f) The UNIT-TEST,SENSOR (38-368-02) or the UNIT-TEST,SENSOR (38-368-03) must show TARGET NEAR.

NOTE: These results are for a serviceable proximity sensor. If the test shows different results, the proximity sensor is unserviceable and must be replaced.

(3) From the test results continue the initial procedure at the applicable Para.

** ON A/C NOT FOR ALL

5. The table that follows is applicable to LGCIU1 P/N 664700500A4x only messages

-------------------------------------------------------------------------------

MESSAGE ATA MESSAGE TEXT

NUMBER REFERENCE

-------------------------------------------------------------------------------

1 323171 LGCIU1 05GA1

2 313234 LGCIU1: NO DATA FROM CFDS

3 323112 L/G SEL VALVE 40GA

4 Not used

5 323134 L/G DOORS SEL VALVE 41GA

6 Not used

7 Not used

8 Not used

9 Not used

10 Not used

11 322113 N L/G SHOCK ABSORBER

2526GM

12 Not used

13 Not used

14 323111 L/G CONTROL LEVER 06GA

15 323173 R L/G EXT PROX SNSR 20GA

16 323173 L L/G EXT PROX SNSR 21GA

17 323173 N L/G EXT PROX SNSR 24GA

18 323173 R L/G DOOR OPEN PROX SNSR 32GA

19 323173 L L/G DOOR OPEN PROX SNSR 33GA

20 323173 N L/G R DOOR OPEN PROX SNSR 36GA

21 323173 N L/G L DOOR OPEN PROX SNSR 37GA

22 323173 R L/G DOOR CLOSED PROX SNSR 26GA

23 323173 L L/G DOOR CLOSED PROX SNSR 27GA

24 323173 N L/G DOORS CLOSED PROX SNSR 30GA

25 323173 R L/G DNLK PROX SNSR 14GA

26 323173 L L/G DNLK PROX SNSR 15GA

27 323173 N L/G DNLK PROX SNSR 18GA

28 323173 R L/G UPLK PROX SNSR 08GA

29 323173 L L/G UPLK PROX SNSR 09GA

30 323173 N L/G UPLK PROX SNSR 12GA

31 523115 FWD CARGO DOOR HANDLE PROX SNSR 28WV

32 523215 AFT CARGO DOOR HANDLE PROX SNSR 34WV

33 523115 FWD CARGO DOOR SAFETY MECHANISM PROX SNSR 30WV

34 523215 AFT CARGO DOOR SAFETY MECHANISM PROX SNSR 32WV

35 Not Used

36 Not Used

37 275115 L FLP DISC PROX SNSR 37CV

38 275115 R FLP DISC PROX SNSR 38CV

39 Not used

40 Not used

41 323171 LGCIU2 05GA2

42 Not used

43 Not used

44 323173 R L/G EXT PROX SNSR 20GA TGT POS

45 323173 L L/G EXT PROX SNSR 21GA TGT POS

46 323173 N L/G EXT PROX SNSR 24GA TGT POS

47 323173 R L/G DOOR OPEN PROX SNSR 32GA TGT POS

48 323173 L L/G DOOR OPEN PROX SNSR 33GA TGT POS

49 323173 N L/G R DOOR OPEN PROX SNSR 36GA TGT POS

50 323173 N L/G L DOOR OPEN PROX SNSR 37GA TGT POS

51 323173 R L/G DOOR CLOSED PROX SNSR 26GA TGT POS

52 323173 L L/G DOOR CLOSED PROX SNSR 27GA TGT POS

53 323173 N L/G DOORS CLOSED PROX SNSR 30GA TGT POS

54 323173 R L/G DNLK PROX SNSR 14GA TGT POS

55 323173 L L/G DNLK PROX SNSR 15GA TGT POS

56 323173 N L/G DNLK PROX SNSR 18GA TGT POS

57 323173 R L/G UPLK PROX SNSR 08GA TGT POS

58 323173 L L/G UPLK PROX SNSR 09GA TGT POS

59 323173 N L/G UPLK PROX SNSR 12GA TGT POS

60 523115 FWD CARGO DOOR HANDLE PROX SNSR 28WV TGT POS

61 523215 AFT CARGO DOOR HANDLE PROX SNSR 34WV TGT POS

62 523115 FWD CARGO DR SAFETY MECH PROX SNSR 30WV TGT POS

63 523215 AFT CARGO DR SAFETY MECH PROX SNSR 32WV TGT POS

64 Not Used

65 Not Used

_______________________________________________________________________________

** ON A/C NOT FOR ALL

6. The table that follows is applicable to LGCIU2 P/N 664700500A4x only messages

-------------------------------------------------------------------------------

MESSAGE ATA MESSAGE TEXT

NUMBER REFERENCE

-------------------------------------------------------------------------------

1 323171 LGCIU2 05GA2

2 313234 LGCIU2: NO DATA FROM CFDS

3 323112 L/G SEL VALVE 40GA

4 Not used

5 323134 L/G DOORS SEL VALVE 41GA

6 Not used

7 Not used

8 Not used

9 Not used

10 Not used

11 322113 N L/G SHOCK ABSORBER

12 Not used

13 Not used

14 323111 L/G CONTROL LEVER 06GA

15 323173 R L/G EXT PROX SNSR 22GA

16 323173 L L/G EXT PROX SNSR 23GA

17 323173 N L/G EXT PROX SNSR 25GA

18 323173 R L/G DOOR OPEN PROX SNSR 34GA

19 323173 L L/G DOOR OPEN PROX SNSR 35GA

20 323173 N L/G R DOOR OPEN PROX SNSR 38GA

21 323173 N L/G L DOOR OPEN PROX SNSR 39GA

22 323173 R L/G DOOR CLOSED PROX SNSR 28GA

23 323173 L L/G DOOR CLOSED PROX SNSR 29GA

24 323173 N L/G DOORS CLOSED PROX SNSR 31GA

25 323173 R L/G DNLK PROX SNSR 16GA

26 323173 L L/G DNLK PROX SNSR 17GA

27 323173 N L/G DNLK PROX SNSR 19GA

28 323173 R L/G UPLK PROX SNSR 10GA

29 323173 L L/G UPLK PROX SNSR 11GA

30 323173 N L/G UPLK PROX SNSR 13GA

31 Not Used

32 Not Used

33 Not Used

34 Not Used

35 523513 FWD CARGO DOOR LOCKSHAFT PROX SNSR 05MJ

36 523513 AFT CARGO DOOR LOCKSHAFT PROX SNSR 12MJ

37 275115 L FLP DISC PROX SNSR 39CV

38 275115 R FLP DISC PROX SNSR 40CV

39 Not used

40 Not used

41 323171 LGCIU1 05GA1

42 Not used

43 Not used

44 323173 R L/G EXT PROX SNSR 20GA TGT POS

45 323173 L L/G EXT PROX SNSR 21GA TGT POS

46 323173 N L/G EXT PROX SNSR 24GA TGT POS

47 323173 R L/G DOOR OPEN PROX SNSR 32GA TGT POS

48 323173 L L/G DOOR OPEN PROX SNSR 33GA TGT POS

49 323173 N L/G R DOOR OPEN PROX SNSR 36GA TGT POS

50 323173 N L/G L DOOR OPEN PROX SNSR 37GA TGT POS

51 323173 R L/G DOOR CLOSED PROX SNSR 26GA TGT POS

52 323173 L L/G DOOR CLOSED PROX SNSR 27GA TGT POS

53 323173 N L/G DOORS CLOSED PROX SNSR 30GA TGT POS

54 323173 R L/G DNLK PROX SNSR 14GA TGT POS

55 323173 L L/G DNLK PROX SNSR 15GA TGT POS

56 323173 N L/G DNLK PROX SNSR 18GA TGT POS

57 323173 R L/G UPLK PROX SNSR 08GA TGT POS

58 323173 L L/G UPLK PROX SNSR 09GA TGT POS

59 323173 N L/G UPLK PROX SNSR 12GA TGT POS

60 Not Used

61 Not Used

62 Not Used

63 Not Used

64 523513 FWD CARGO DOOR LOCKSHAFT PROX SNSR 30WV TGT POS

65 523513 AFT CARGO DOOR LOCKSHAFT PROX SNSR 32WV TGT POS

_______________________________________________________________________________

** ON A/C NOT FOR ALL

7. The data that follows is applicable to P/N 80-178-xx LGCIU only.
The table that follows shows the LGCIU1 fault messages

-----------------------------------------------------------------------------

MESSAGE ! ATA ! MESSAGE TEXT

NUMBER ! REFERENCE !

-----------------------------------------------------------------------------

1 323171 LGCIU1(5GA1)

2 313234 CFDIU(1TW)/LGCIU1(5GA1)

3 323112 SEL VALVE (40GA)/LGCIU1(5GA1)

4 323173 L LG BOGIE ALIGN PROX SNSR(45GA)/LGCIU1(5GA1)

5 323134 SEL VALVE(41GA)/LGCIU1(5GA1)

6 323173 R LG BOGIE ALIGN PROX SNSR(44GA)/LGCIU1(5GA1)

7 not used

8 not used

9 not used

10 not used

11 322113 N LG SHOCK ABSORBER (2526GM)

12 321115 L LG PITCH TRIMMER (4076GM)

13 321115 R LG PITCH TRIMMER (4077GM)

14 323111 LG CONTROL LEVER (6GA)/LGCIU1(5GA1)

15 323173 R LG EXT PROX SNSR(20GA)/LGCIU1(5GA1)

16 323173 L LG EXT PROX SNSR(21GA)/LGCIU1(5GA1)

17 323173 N LG EXT PROX SNSR(24GA)/LGCIU1(5GA1)

18 323173 R LG DOOR OPEN PROX SNSR(32GA)/LGCIU1(5GA1)

19 323173 L LG DOOR OPEN PROX SNSR(33GA)/LGCIU1(5GA1)

20 323173 N LG R DOOR OPEN PROX SNSR(36GA)/LGCIU1(5GA1)

21 323173 N LG L DOOR OPEN PROX SNSR(37A)/LGCIU1(5GA1)

22 323173 R LG DOOR CLOSED PROX SNSR(26GA)/LGCIU1(5GA1)

23 323173 L LG DOOR CLOSED PROX SNSR(27GA)/LGCIU1(5GA1)

24 323173 N LG DOORS CLOSED PROX SNSR(30GA)/LGCIU1(5GA1)

25 323173 R LG DNLK PROX SNSR (14GA)/LGCIU1(5GA1)

26 323173 L LG DNLK PROX SNSR (15GA)/LGCIU1(5GA1)

27 323173 N LG DNLK PROX SNSR (18GA)/LGCIU1(5GA1)

28 323173 R LG UPLK PROX SNSR (8GA)/LGCIU1(5GA1)

29 323173 L LG UPLK PROX SNSR (9GA)/LGCIU1(5GA1)

30 323173 N LG UPLK PROX SNSR (12GA)/LGCIU1(5GA1)

31 527112 FWD CARGO DR HANDLE PROX SNSR (28WV)/LGCIU1(5GA1)

32 527112 AFT CARGO DR HANDLE PROX SNSR (34WV)/LGCIU1(5GA1)

33 527112 FWD CARGO DR SAFETY PROX SNSR (30WV)/LGCIU1(5GA1)

34 527112 AFT CARGO DR SAFETY PROX SNSR (32WV)/LGCIU1(5GA1)

35 not used

36 not used

37 275115 L FLAP DISC PROX SNSR (37CV)/LGCIU1(5GA1)

38 275115 R FLAP DISC PROX SNSR (38CV)/LGCIU1(5GA1)

39 not used

40 not used

41 323171 LGCIU2(5GA2)/LGCIU1(5GA1)

42 323173 L LG BOGIE ALIGN PROX SNSR(45GA)TGT POS

43 323173 R LG BOGIE ALIGN PROX SNSR(44GA)TGT POS

44 323173 R LG EXT PROX SNSR (20GA) TGT POS

45 323173 L LG EXT PROX SNSR (21GA) TGT POS

46 323173 N LG EXT PROX SNSR (24GA) TGT POS

47 323173 R LG DOOR OPEN PROX SNSR (32GA) TGT POS

48 323173 L LG DOOR OPEN PROX SNSR (33GA) TGT POS

49 323173 N LG R DOOR OPEN PROX SNSR (36GA) TGT POS

50 323173 N LG L DOOR OPEN PROX SNSR (37GA) TGT POS

51 323173 R LG DOOR CLOSED PROX SNSR (26GA) TGT POS

52 323173 L LG DOOR CLOSED PROX SNSR (27GA) TGT POS

53 323173 N LG DOORS CLOSED PROX SNSR (30GA) TGT POS

54 323173 R LG DNLK PROX SNSR (14GA) TGT POS

55 323173 L LG DNLK PROX SNSR (15GA) TGT POS

56 323173 N LG DNLK PROX SNSR (18GA) TGT POS

57 323173 R LG UPLK PROX SNSR (8GA) TGT POS

58 323173 L LG UPLK PROX SNSR (9GA) TGT POS

59 323173 N LG UPLK PROX SNSR (12GA) TGT POS

60 527112 FWD CARGO DOOR HANDLE PROX SNSR (28WV) TGT POS

61 527112 AFT CARGO DOOR HANDLE PROX SNSR (34WV) TGT POS

62 527112 FWD CARGO DR SAFETY MECH PROX SNSR (30WV) TGT POS

63 527112 AFT CARGO DR SAFETY MECH PROX SNSR (32WV) TGT POS

64 not used

65 not used

66 323171 LGCIU1(5GA1)BUS 1 INTERNAL FEEDBACK

67 323171 LGCIU1(5GA1)

68 323171 LGCIU1(5GA1)

101 323100 AUTO RESET

102 323171 LGCIU1(5GA1)BUS 2 INTERNAL FEEDBACK

103 323171 LGCIU1(5GA1)BUS 3 INTERNAL FEEDBACK

104 323171 LGCIU1(5GA1) INCOMPATIBLE WITH AIRCRAFT TYPE

105 323171 LGCIU1(5GA1) INTER LGCIU BUS INTERNAL FEEDBACK

106 323146 R LG ACTUATOR (2504GM)/(2506GM)

107 323146 L LG ACTUATOR (2503GM)/(2505GM)

108 323122 N LG ACTUATOR (2527GM)/(2845GM)

109 323135 R LG DOOR ACTUATOR (2522GM)

110 323135 L LG DOOR ACTUATOR (2523GM)

111 323116 N LG L DOOR ACTUATOR (2531GM)

112 323116 N LG R DOOR ACTUATOR (2531GM)

113 323144 R LG UPLOCK (2510GM)/(2504GM)

114 323144 L LG UPLOCK (2509GM)/(2503GM)

115 323121 N LG UPLOCK (2530GM)/(2527GM)

116 323133 R LG DOOR UPLOCK (2520GM)/(2522GM)

117 323133 L LG DOOR UPLOCK (2521GM)/(2523GM)

118 323114 N LG DOOR UPLOCK (2534GM)/(2531GM)

119 323173 R LG DR NOT FULLY OPEN PROX SNSR (32GA) TGT POS

120 323173 L LG DR NOT FULLY OPEN PROX SNSR (33GA) TGT POS

121 323173 N LG L DR NOT FULLY OPEN PROX SNSR (37GA) TGT POS

122 323173 N LG R DR NOT FULLY OPEN PROX SNSR (36GA) TGT POS

123 321113 R LG SHOCK ABSORBER (2502GM)

124 321113 L LG SHOCK ABSORBER (2501GM)

125 321115 L LG PITCH TRIMMER (4076GM)/(4078GM)

126 321115 R LG PITCH TRIMMER (4077GM)/(4079GM)

127 240000 POWER SUPPLY INTERRUPT

128 323171 WRG: AA12A/LGCIU1(5GA1)

129 323171 WRG: AA14D/AA14F/LGCIU2(5GA2)/LGCIU1(5GA1)

130 323171 WRG: AA14D/AA14F/LGCIU2(5GA2)/LGCIU1(5GA1)

131 323171 WRG: AA7G/AA9H/LGCIU1(5GA1)

132 323171 WRG: AA9K/LGCIU1(5GA1)

---------------------------------------------------------------------------

------------------------------------------------------------------------------

MESSAGE ! ATA ! MESSAGE TEXT

NUMBER ! REFERENCE !

------------------------------------------------------------------------------

1 323171 LGCIU2(5GA2)

2 313234 CFDIU(1TW)/LGCIU2(5GA2)

3 323112 SEL VALVE (40GA)/LGCIU2(5GA2)

4 323173 L LG BOGIE ALIGN PROX SNSR(47GA)/LGCIU2(5GA2)

5 323134 SEL VALVE(41GA)/LGCIU2(5GA2)

6 323173 R LG BOGIE ALIGN PROX SNSR(46GA)/LGCIU2(5GA2)

7 not used

8 not used

9 not used

10 not used

11 322113 N LG SHOCK ABSORBER (2526GM)

12 321115 L LG PITCH TRIMMER (4076GM)

13 321115 R LG PITCH TRIMMER (4077GM)

14 323111 LG CONTROL LEVER (6GA)/LGCIU2(5GA2)

15 323173 R LG EXT PROX SNSR(22GA)/LGCIU2(5GA2)

16 323173 L LG EXT PROX SNSR(23GA)/LGCIU2(5GA2)

17 323173 N LG EXT PROX SNSR(25GA)/LGCIU2(5GA2)

18 323173 R LG DOOR OPEN PROX SNSR(34GA)/LGCIU2(5GA2)

19 323173 L LG DOOR OPEN PROX SNSR(35GA)/LGCIU2(5GA2)

20 323173 N LG R DOOR OPEN PROX SNSR(38GA)/LGCIU2(5GA2)

21 323173 N LG L DOOR OPEN PROX SNSR(39A)/LGCIU2(5GA2)

22 323173 R LG DOOR CLOSED PROX SNSR(28GA)/LGCIU2(5GA2)

23 323173 L LG DOOR CLOSED PROX SNSR(29GA)/LGCIU2(5GA2)

24 323173 N LG DOORS CLOSED PROX SNSR(31GA)/LGCIU2(5GA2)

25 323173 R LG DNLK PROX SNSR (16GA)/LGCIU2(5GA2)

26 323173 L LG DNLK PROX SNSR (17GA)/LGCIU2(5GA2)

27 323173 N LG DNLK PROX SNSR (19GA)/LGCIU2(5GA2)

28 323173 R LG UPLK PROX SNSR (10GA)/LGCIU2(5GA2)

29 323173 L LG UPLK PROX SNSR (11GA)/LGCIU2(5GA2)

30 323173 N LG UPLK PROX SNSR (13GA)/LGCIU2(5GA2)

31 not used

32 not used

33 not used

34 not used

35 523513 FWD CARGO DR SHAFT PROX SNSR(5MJ)/LGCIU2(5GA2)

36 523513 AFT CARGO DR SHAFT PROX SNSR(12MJ)/LGCIU2(5GA2)

37 275115 L FLAP DISC PROX SNSR (39CV)/LGCIU2(5GA2)

38 275115 R FLAP DISC PROX SNSR (40CV)/LGCIU2(5GA2)

39 not used

40 not used

41 323171 LGCIU1(5GA1)/LGCIU2(5GA2)

42 323173 L LG BOGIE ALIGN PROX SNSR(47GA)TGT POS

43 323173 R LG BOGIE ALIGN PROX SNSR(46GA)TGT POS

44 323173 R LG EXT PROX SNSR (22GA) TGT POS

45 323173 L LG EXT PROX SNSR (23GA) TGT POS

46 323173 N LG EXT PROX SNSR (25GA) TGT POS

47 323173 R LG DOOR OPEN PROX SNSR (34GA) TGT POS

48 323173 L LG DOOR OPEN PROX SNSR (35GA) TGT POS

49 323173 N LG R DOOR OPEN PROX SNSR (38GA) TGT POS

50 323173 N LG L DOOR OPEN PROX SNSR (39GA) TGT POS

51 323173 R LG DOOR CLOSED PROX SNSR (28GA) TGT POS

52 323173 L LG DOOR CLOSED PROX SNSR (29GA) TGT POS

53 323173 N LG DOORS CLOSED PROX SNSR (31GA) TGT POS

54 323173 R LG DNLK PROX SNSR (16GA) TGT POS

55 323173 L LG DNLK PROX SNSR (17GA) TGT POS

56 323173 N LG DNLK PROX SNSR (19GA) TGT POS

57 323173 R LG UPLK PROX SNSR (10GA) TGT POS

58 323173 L LG UPLK PROX SNSR (11GA) TGT POS

59 323173 N LG UPLK PROX SNSR (13GA) TGT POS

60 not used

61 not used

62 not used

63 not used

64 523513 FWD CARGO DOOR LOCK SHAFT PROX SNSR(5MJ) TGT POS

65 523513 AFT CARGO DOOR LOCK SHAFT PROX SNSR(12MJ) TGT POS

66 323171 LGCIU2(5GA2)BUS 1 INTERNAL FEEDBACK

67 323171 LGCIU2(5GA2)

68 323171 LGCIU2(5GA2)

101 323100 AUTO RESET

102 323171 LGCIU2(5GA2)BUS 2 INTERNAL FEEDBACK

103 323171 LGCIU2(5GA2)BUS 3 INTERNAL FEEDBACK

104 323171 LGCIU2(5GA2) INCOMPATIBLE WITH AIRCRAFT TYPE

105 323171 LGCIU2(5GA2) INTER LGCIU BUS INTERNAL FEEDBACK

106 323146 R LG ACTUATOR (2504GM)/(2506GM)

107 323146 L LG ACTUATOR (2503GM)/(2505GM)

108 323122 N LG ACTUATOR (2527GM)/(2845GM)

109 323135 R LG DOOR ACTUATOR (2522GM)

110 323135 L LG DOOR ACTUATOR (2523GM)

111 323116 N LG L DOOR ACTUATOR (2531GM)

112 323116 N LG R DOOR ACTUATOR (2531GM)

113 323144 R LG UPLOCK (2510GM)/(2504GM)

114 323144 L LG UPLOCK (2509GM)/(2503GM)

115 323121 N LG UPLOCK (2530GM)/(2527GM)

116 323133 R LG DOOR UPLOCK (2520GM)/(2522GM)

117 323133 L LG DOOR UPLOCK (2521GM)/(2523GM)

118 323114 N LG DOOR UPLOCK (2534GM)/(2531GM)

119 323173 R LG DR NOT FULLY OPEN PROX SNSR (34GA) TGT POS

120 323173 L LG DR NOT FULLY OPEN PROX SNSR (35GA) TGT POS

121 323173 N LG L DR NOT FULLY OPEN PROX SNSR (39GA) TGT POS

122 323173 N LG R DR NOT FULLY OPEN PROX SNSR (38GA) TGT POS

123 321113 R LG SHOCK ABSORBER (2502GM)

124 321113 L LG SHOCK ABSORBER (2501GM)

125 321115 L LG PITCH TRIMMER (4076GM)/(4078GM)

126 321115 R LG PITCH TRIMMER (4077GM)/(4079GM)

127 240000 POWER SUPPLY INTERRUPT

128 323171 WRG: AA12A/LGCIU2(5GA2)

129 323171 WRG: AA14D/AA14F/LGCIU1(5GA1)/LGCIU2(5GA2)

130 323171 WRG: AA14D/AA14F/LGCIU1(5GA1)/LGCIU2(5GA2)

131 323171 WRG: AA7G/AA9H/LGCIU2(5GA2)

132 323171 WRG: AA9K/LGCIU2(5GA2)

---------------------------------------------------------------------------

[Rev.8 from Aug 2018] 2026.04.04 04:31:29 UTC