W DOC AIRBUS | AMM A320F

Inductance Check of the Proximity Sensors/Switches

TASK 32-31-73-820-008-A
Inductance Check of the Proximity Sensors/Switches

WARNING: MAKE SURE THAT THE SAFETY DEVICES AND THE WARNING NOTICES ARE IN POSITION BEFORE YOU START A TASK ON OR NEAR:
  • THE FLIGHT CONTROLS
  • THE FLIGHT CONTROL SURFACES
  • THE LANDING GEAR AND RELATED DOORS
  • COMPONENTS THAT MOVE.
MOVEMENT OF COMPONENTS CAN KILL OR CAUSE INJURY TO PERSONS AND/OR DAMAGE TO EQUIPMENT.
WARNING: MAKE SURE THAT THE GROUND SAFETY-LOCKS ARE IN POSITION ON THE LANDING GEAR. THIS WILL PREVENT UNWANTED MOVEMENT OF THE LANDING GEAR, AND THUS POSSIBLE INJURY TO PERSONS AND DAMAGE TO THE AIRCRAFT AND/OR EQUIPMENT.
1. Reason for the Job
To check the condition of the proximity sensors and switches.
2. Job Set-up Information
 A. Fixtures, Tools, Test and Support Equipment
REFERENCE
QTY
DESIGNATION
No specific
1
ACCESS PLATFORM 2M (6 FT)
No specific
2
INDUCTANCE METER 1KHZ
No specific
1
ROD - NON METALLIC
No specific
AR
SAFETY BARRIER(S)
No specific
1
WARNING NOTICE(S)
38-798-01
1
A320FAM LGCIU BREAKOUT BOX
98D27803000000
1
LOCKING TOOL-FLAP SLAT LEVER,INT. POSITION
98D27803500001
1
LOCKING TOOL ZERO POS
 B. Work Zones and Access Panels
ZONE/ACCESS
ZONE DESCRIPTION
811
 C. Referenced Information
REFERENCE
DESIGNATION
TASK 07-11-00-581-001-A
Lifting for Aircraft Maintenance Operations
TASK 07-11-00-586-002-A
Lowering of the Aircraft for Maintenance Operations
TASK 24-41-00-861-002-A
Energize the Aircraft Electrical Circuits from the External Power
TASK 24-41-00-861-002-A-01
Energize the Aircraft Electrical Circuits from the APU
TASK 24-41-00-861-002-A-02
Energize the Aircraft Electrical Circuits from Engine 1(2)
TASK 24-41-00-862-002-A
De-energize the Aircraft Electrical Circuits Supplied from the External Power
TASK 24-41-00-862-002-A-01
De-energize the Aircraft Electrical Circuits Supplied from the APU
TASK 24-41-00-862-002-A-02
De-energize the Aircraft Electrical Circuits Supplied from the Engine 1(2)
TASK 27-50-00-866-008-A
Extension of the Flaps on the Ground
TASK 27-50-00-866-008-A-01
Extension of the Flaps/Slats on the Ground
TASK 27-50-00-866-009-A
Retraction of the Flaps on the Ground
TASK 27-50-00-866-009-A-01
Retraction of the Flaps/Slats on the Ground
TASK 29-23-00-863-001-A
Pressurize the Green Hydraulic System from the Yellow Hydraulic System through the PTU with the Electric Pump
TASK 32-00-00-481-001-A
Installation of the Safety Devices on the Landing Gears
TASK 32-00-00-481-002-A
Installation of the Safety Devices on the Landing Gear Doors
TASK 32-12-00-010-001-A
Open the Main Gear Doors for Access
TASK 32-12-00-410-001-A
Close the Main Gear Doors after Access
TASK 32-22-00-010-001-A
Nose Gear Doors - Ground Doors Opening
TASK 32-22-00-410-001-A
Nose Gear Doors - Ground Doors Closing
TASK 32-30-00-867-001-A
Retraction of the Landing Gears for Maintenance
TASK 32-30-00-867-002-A
Extension of the Landing Gears after Maintenance
TASK 32-31-71-000-001-A
Removal of the LGCIU
TASK 32-31-71-400-001-A
Installation of the LGCIU
TASK 32-31-73-820-009-A
Resistance Check of the Proximity Sensors
TASK 52-30-00-860-001-A
Open the FWD or Aft Cargo-Compartment Door with the Yellow Electric Pump
TASK 52-30-00-860-002-A
Close the FWD or Aft Cargo-Compartment Door with the Yellow Electric Pump
F LGCIU ARINC Tray Connector AA - Proximity Sensor/Switch Pin Locations
F Proximity Sensor/Switch Inductance Check Data - Aircraft On-Ground Condition
F Proximity Sensor/Switch Inductance Check Data - Simulated Flight Condition
FOR [10GA] (PROX SNSR-R L/G UPLK, SYS 2)
FOR [11GA] (PROX SNSR-L L/G UPLK, SYS 2)
FOR [8GA] (PROX SNSR-R L/G UPLK, SYS 1)
FOR [9GA] (PROX SNSR-L L/G UPLK, SYS 1)
TASK 32-31-73-000-001-A
Removal of the MLG Proximity-Sensors
TASK 32-31-73-400-001-A
Installation of the MLG Proximity-Sensors
FOR [12GA] (PROX SNSR-NLG UPLK, SYS 1)
FOR [13GA] (PROX SNSR-NLG UPLK, SYS 2)
TASK 32-31-73-000-005-A
Removal of the NLG Proximity-Sensors
TASK 32-31-73-400-005-A
Installation of the NLG Proximity-Sensors
FOR [12MJ] (SW-LOCKING SHAFT)
FOR [5MJ] (SW-LOCKING SHAFT)
TASK 52-35-13-000-002-A
Removal of the Proximity Switches
TASK 52-35-13-400-002-A
Installation of the Proximity Switches
FOR [14GA] (PROX SNSR-R L/G DNLK, SYS 1)
FOR [15GA] (PROX SNSR-L L/G DNLK, SYS 1)
FOR [16GA] (PROX SNSR-R L/G DNLK, SYS 2)
FOR [17GA] (PROX SNSR-L L/G DNLK, SYS 2)
TASK 32-31-73-000-001-A
Removal of the MLG Proximity-Sensors
TASK 32-31-73-200-001-A
Inspection of the MLG Proximity Sensor and Target Clearances
TASK 32-31-73-400-001-A
Installation of the MLG Proximity-Sensors
TASK 32-31-73-820-001-A
Adjustment of the MLG Downlock Proximity Sensors
FOR [18GA] (PROX SNSR-NLG DNLK, SYS 1)
FOR [19GA] (PROX SNSR-NLG DNLK, SYS 2)
TASK 32-31-73-000-005-A
Removal of the NLG Proximity-Sensors
TASK 32-31-73-200-002-A
Inspection of the NLG Proximity Sensor and Target Clearances
TASK 32-31-73-400-005-A
Installation of the NLG Proximity-Sensors
TASK 32-31-73-820-005-A
Adjustment of the NLG Downlock Proximity Sensors
FOR [20GA] (PROX SNSR-R L/G EXT, SYS 1)
FOR [21GA] (PROX SNSR-L L/G EXT, SYS 1)
FOR [22GA] (PROX SNSR-R L/G EXT, SYS 2)
FOR [23GA] (PROX SNSR-L L/G EXT, SYS 2)
TASK 32-31-73-000-001-A
Removal of the MLG Proximity-Sensors
TASK 32-31-73-200-001-A
Inspection of the MLG Proximity Sensor and Target Clearances
TASK 32-31-73-400-001-A
Installation of the MLG Proximity-Sensors
TASK 32-31-73-820-002-A
Adjustment of the MLG Extension Proximity Sensors
FOR [24GA] (PROX SNSR-NLG EXT, SYS 1)
FOR [25GA] (PROX SNSR-NLG EXT, SYS 2)
TASK 32-31-73-000-005-A
Removal of the NLG Proximity-Sensors
TASK 32-31-73-200-002-A
Inspection of the NLG Proximity Sensor and Target Clearances
TASK 32-31-73-400-005-A
Installation of the NLG Proximity-Sensors
TASK 32-31-73-820-006-A
Adjustment of the NLG Extension/Steering Proximity Sensors
TASK 32-31-73-820-006-A-01
Check/Adjustment of the NLG Extension/Steering Proximity Sensors with the Aircraft Weight on Wheels
FOR [26GA] (PROX SNSR-R L/G DOOR CLOSED, SYS 1)
FOR [27GA] (PROX SNSR-L L/G DOOR CLOSED, SYS 1)
FOR [28GA] (PROX SNSR-R L/G DOOR CLOSED, SYS 2)
FOR [29GA] (PROX SNSR-L L/G DOOR CLOSED, SYS 2)
TASK 32-31-73-000-001-A
Removal of the MLG Proximity-Sensors
TASK 32-31-73-400-001-A
Installation of the MLG Proximity-Sensors
FOR [28WV] (PROX SW-HANDLE, FWD CARGO COMPT DOOR)
FOR [34WV] (PROX SW-HANDLE, AFT CARGO COMPT DOOR)
TASK 52-71-00-820-004-A
Adjustment of the Proximity Switches of the Locking Handle of the Cargo Compartment Doors
TASK 52-71-12-000-001-A
Removal of the Proximity Switches
TASK 52-71-12-400-001-A
Installation of the Proximity Switches
FOR [30GA] (PROX SNSR-NLG DOORS CLOSED, SYS 1)
FOR [31GA] (PROX SNSR-NLG DOORS CLOSED, SYS 2)
TASK 32-31-73-000-005-A
Removal of the NLG Proximity-Sensors
TASK 32-31-73-400-005-A
Installation of the NLG Proximity-Sensors
FOR [30WV] (PROX SW-FRAME, FWD CARGO COMPT DOOR)
FOR [32WV] (PROX SW-FRAME, AFT CARGO COMPT DOOR)
TASK 52-71-00-820-003-A
Adjustment of the Proximity Switches of the Cargo-Compartment Door Threshold
TASK 52-71-12-000-002-A
Removal of the Proximity Switches
TASK 52-71-12-400-002-A
Installation of the Proximity Switches
FOR [32GA] (PROX SNSR-R L/G DOOR OPEN, SYS 1)
FOR [33GA] (PROX SNSR-L L/G DOOR OPEN, SYS 1)
FOR [34GA] (PROX SNSR-R L/G DOOR OPEN, SYS 2)
FOR [35GA] (PROX SNSR-L L/G DOOR OPEN, SYS 2)
TASK 32-31-73-000-001-A
Removal of the MLG Proximity-Sensors
TASK 32-31-73-200-001-A
Inspection of the MLG Proximity Sensor and Target Clearances
TASK 32-31-73-400-001-A
Installation of the MLG Proximity-Sensors
TASK 32-31-73-820-003-A
Adjustment of the MLG Door Open Proximity Sensors
FOR [36GA] (PROX SNSR-NLG R DOOR OPEN, SYS 1)
FOR [37GA] (PROX SNSR-NLG L DOOR OPEN, SYS 1)
FOR [38GA] (PROX SNSR-NLG R DOOR OPEN, SYS 2)
FOR [39GA] (PROX SNSR-NLG L DOOR OPEN, SYS 2)
TASK 32-31-73-000-005-A
Removal of the NLG Proximity-Sensors
TASK 32-31-73-200-002-A
Inspection of the NLG Proximity Sensor and Target Clearances
TASK 32-31-73-400-005-A
Installation of the NLG Proximity-Sensors
TASK 32-31-73-820-004-A
Adjustment of the NLG Door Open Proximity Sensors
FOR [37CV] (SENSOR-L FLAP ATTACHMENT FAILURE DETECTION)
FOR [38CV] (SENSOR-R FLAP ATTACHMENT FAILURE DETECTION)
FOR [39CV] (SENSOR-L FLAP ATTACHMENT FAILURE DETECTION)
FOR [40CV] (SENSOR-R FLAP ATTACHMENT FAILURE DETECTION)
TASK 27-51-44-000-002-A
Removal of the Proximity-Sensor of the Interconnecting Strut
TASK 27-51-44-400-002-A
Installation of the Proximity-Sensor of the Interconnecting Strut
3. Job Set-up
Subtask 32-31-73-941-065-A
A. Safety Precautions
   (1) Put the SAFETY BARRIER(S) in position.
   (2) Install the ground safety locks on the landing gear (Ref. AMM TASK 32-00-00-481-001).
   (3) On the panel 400VU:
  • make sure that the landing-gear control-lever 6GA is in the DOWN position
  • put a WARNING NOTICE(S) in position to tell persons not to operate the landing gear.
   (4) Put a WARNING NOTICE(S) on the GRAVITY GEAR EXTN handle (panel 110VU) to tell persons not to operate the landing gear.
Subtask 32-31-73-860-078-A
B. Aircraft Maintenance Configuration
WARNING: MAKE SURE THAT THE TRAVEL RANGES OF THE FLIGHT CONTROLS SURFACES ARE CLEAR. MOVEMENT OF FLIGHT CONTROLS CAN CAUSE INJURY TO PERSONS AND/OR DAMAGE TO EQUIPMENT.
   (1) Make sure that the flaps are fully retracted (Ref. AMM TASK 27-50-00-866-009).
   (2) Install the 98D27803500001 LOCKING TOOL ZERO POS on the flap/slat control lever.
   (3) Open the MLG doors (Ref. AMM TASK 32-12-00-010-001).
   (4) Make sure a 460005835 SLEEVE - GROUND LOCK is correctly installed on each MLG door actuating-cylinder.
   (5) Open the NLG doors (Ref. AMM TASK 32-22-00-010-001).
   (6) Make sure that a 98D32203502000 SAFETY PIN - NLG DOOR is correctly installed in the rigging holes of each NLG door.
   (7) Open the FWD and AFT cargo-compartment doors (Ref. AMM TASK 52-30-00-860-001).
   (8) Make sure that a 98D52307515000 SAFETY LOCK-ACTUATOR,CARGO DOORS is correctly installed on the actuator of each cargo-compartment door.
Subtask 32-31-73-010-063-A
C. Get Access to the LGCIU ARINC Trays
   (1) Put the ACCESS PLATFORM 2M (6 FT) in position at the access door 811.
   (2) Open the access door 811.
   (3) Remove the two LGCIUs (Ref. AMM TASK 32-31-71-000-001).
4. Procedure
Subtask 32-31-73-760-050-A
A. Inductance Check of the Proximity Sensors/Switches-Aircraft On-Ground Condition
NOTE: The inductance value at the target-near position is very important to the correct operation of the proximity sensor/switch. If the inductance value of the proximity sensor/switch is not correct, then the L/G will not operate.
   (1) De-energize the aircraft electrical circuits (Ref. AMM TASK 24-41-00-862-002).
   (2) Do procedure 1 or 2 to check each applicable proximity sensor/switch as follows:
F LGCIU ARINC Tray Connector AA - Proximity Sensor/Switch Pin Locations
F Proximity Sensor/Switch Inductance Check Data - Aircraft On-Ground Condition
     (a) Procedure 1:
       1 Get the related LGCIU ARINC connector pin numbers of the applicable proximity sensor/switch from the applicable table.
       2 Find the related pin locations in connector AA of the applicable LGCIU ARINC tray.
       3 Use a INDUCTANCE METER 1KHZ to measure and record the inductance between the applicable pins of connector AA.
or
     (b) Procedure 2:
       1 Install the 38-798-01 A320FAM LGCIU BREAKOUT BOX.
       2 Select the proximity sensor channel to be tested.
       3 Use a INDUCTANCE METER 1KHZ to measure and record the inductance.
       4 Remove the 38-798-01 A320FAM LGCIU BREAKOUT BOX.
     (c) Compare the recorded inductance value with the value given in the applicable table. If the recorded inductance value is not as specified, refer to Para. 4.D.
   (3) If a check of a MLG or NLG uplock proximity sensor is necessary, check the target-near inductance as follows:
NOTE: This check will give a simulated target-near position inductance value. An accurate check can only be made with the landing gear retracted (the full weight of the gear will then be applied to the uplock).
     (a) Use a ROD - NON METALLIC to fully close the locking mechanism of the applicable uplock assembly.
     (b) Check and record the applicable proximity sensor inductance again.
     (c) Compare the recorded inductance value with the value given in the table. If the recorded inductance value is not as specified, refer to Para. 4.D.
NOTE: The closed uplock(s) will be opened automatically when the hydraulics are pressurized and the electrical circuits are energized if:
Subtask 32-31-73-860-070-A
B. Aircraft Maintenance Configuration
WARNING: MAKE SURE THAT THE TRAVEL RANGES OF THE FLIGHT CONTROLS SURFACES ARE CLEAR. MOVEMENT OF FLIGHT CONTROLS CAN CAUSE INJURY TO PERSONS AND/OR DAMAGE TO EQUIPMENT.
   (1) Install the two LGCIUs (Ref. AMM TASK 32-31-71-400-001).
   (2) If necessary, release the MLG or NLG uplocks as follows:
NOTE: This is only necessary if a check of an uplock proximity sensor target-near inductance was made in Paragraph 4A.
     (a) Make sure that the landing-gear control lever 6GA is in the DOWN position.
     (b) Make sure that the MLG door ground-control-handles are locked in the OPEN position (Ref. AMM TASK 32-12-00-010-001).
     (c) Make sure that the NLG door ground-opening handle is locked in the opening position (Ref. AMM TASK 32-22-00-010-001).
     (d) Make sure that the landing gear doors are open and safetied (Ref. AMM TASK 32-00-00-481-002).
     (e) Energize the aircraft electrical circuits (Ref. AMM TASK 24-41-00-861-002).
     (f) Pressurize the Green hydraulic system (Ref. AMM TASK 29-23-00-863-001).
NOTE: The landing gear uplocks will release.
   (3) If a check of a MLG or NLG shock absorber proximity sensor is necessary, lift the aircraft on jacks (Ref. AMM TASK 07-11-00-581-001).
NOTE: Do not lift the aircraft if a check of a MLG or NLG shock absorber proximity sensor is not necessary.
   (4) If a check of a MLG or NLG uplock proximity sensor is necessary, retract the landing gear (Ref. AMM TASK 32-30-00-867-001).
NOTE: Do not retract the landing gear if a check of a uplock proximity sensor is not necessary.
   (5) Close the MLG doors (Ref. AMM TASK 32-12-00-410-001).
   (6) Close the NLG doors (Ref. AMM TASK 32-22-00-410-001).
   (7) Close the FWD and AFT cargo-compartment doors (Ref. AMM TASK 52-30-00-860-002).
   (8) Remove the 98D27803500001 LOCKING TOOL ZERO POS from the flap/slat control lever.
   (9) Fully extend the flaps (Ref. AMM TASK 27-50-00-866-008).
   (10) Install the 98D27803000000 LOCKING TOOL-FLAP SLAT LEVER,INT. POSITION on the flap/slat control lever.
   (11) Remove the two LGCIUs (Ref. AMM TASK 32-31-71-000-001).
Subtask 32-31-73-760-051-A
C. Inductance Check of the Proximity Sensors/Switches - Simulated Flight Condition
NOTE: The inductance value at the target-near position is very important to the correct operation of the proximity sensor/switch. If the inductance value of the proximity sensor/switch is not 5.2 mH or more, then the L/G will not operate.
   (1) De-energize the aircraft electrical circuits (Ref. AMM TASK 24-41-00-862-002).
   (2) Do procedure 1 or 2 to check each applicable proximity sensor/switch as follows:

F LGCIU ARINC Tray Connector AA - Proximity Sensor/Switch Pin Locations
F Proximity Sensor/Switch Inductance Check Data - Simulated Flight Condition
     (a) Procedure 1:
       1 Get the related LGCIU ARINC connector pin numbers of the applicable proximity sensor/switch from the applicable table.
       2 Find the related pin locations in connector AA of the applicable LGCIU ARINC tray.
       3 Use a INDUCTANCE METER 1KHZ to measure and record the inductance between the applicable pins of connector AA.
or
     (b) Procedure 2:
       1 Install the 38-798-01 A320FAM LGCIU BREAKOUT BOX.
       2 Select the proximity sensor channel to be tested.
       3 Use a INDUCTANCE METER 1KHZ to measure the inductance.
       4 Remove the 38-798-01 A320FAM LGCIU BREAKOUT BOX.
     (c) Compare the recorded inductance value with the value given in the applicable table. If the recorded inductance value is not as specified, refer to Para. 4.D.
Subtask 32-31-73-960-051-A ** ON A/C NOT FOR ALL
D. Adjustment/Replacement of the Proximity Sensors/Switches
   (1) If the recorded inductance values are not as specified:
  • do a resistance check of the proximity sensor/switch (Ref. AMM TASK 32-31-73-820-009)
  • do a check of the proximity sensor/switch and the target and (if possible) adjust the target clearance
    or
  • replace the defective proximity sensor/switch:
     (a) FOR [37CV] (SENSOR-L FLAP ATTACHMENT FAILURE DETECTION), [38CV] (SENSOR-R FLAP ATTACHMENT FAILURE DETECTION), [39CV] (SENSOR-L FLAP ATTACHMENT FAILURE DETECTION), [40CV] (SENSOR-R FLAP ATTACHMENT FAILURE DETECTION)
     (b) FOR [8GA] (PROX SNSR-R L/G UPLK, SYS 1), [9GA] (PROX SNSR-L L/G UPLK, SYS 1), [10GA] (PROX SNSR-R L/G UPLK, SYS 2), [11GA] (PROX SNSR-L L/G UPLK, SYS 2)
     (c) FOR [12GA] (PROX SNSR-NLG UPLK, SYS 1), [13GA] (PROX SNSR-NLG UPLK, SYS 2)
     (d) FOR [14GA] (PROX SNSR-R L/G DNLK, SYS 1), [15GA] (PROX SNSR-L L/G DNLK, SYS 1), [16GA] (PROX SNSR-R L/G DNLK, SYS 2), [17GA] (PROX SNSR-L L/G DNLK, SYS 2)
     (e) FOR [18GA] (PROX SNSR-NLG DNLK, SYS 1), [19GA] (PROX SNSR-NLG DNLK, SYS 2)
     (f) FOR [20GA] (PROX SNSR-R L/G EXT, SYS 1), [21GA] (PROX SNSR-L L/G EXT, SYS 1), [22GA] (PROX SNSR-R L/G EXT, SYS 2), [23GA] (PROX SNSR-L L/G EXT, SYS 2)
     (g) FOR [24GA] (PROX SNSR-NLG EXT, SYS 1), [25GA] (PROX SNSR-NLG EXT, SYS 2)
     (h) FOR [26GA] (PROX SNSR-R L/G DOOR CLOSED, SYS 1), [27GA] (PROX SNSR-L L/G DOOR CLOSED, SYS 1), [28GA] (PROX SNSR-R L/G DOOR CLOSED, SYS 2), [29GA] (PROX SNSR-L L/G DOOR CLOSED, SYS 2)
     (i) FOR [30GA] (PROX SNSR-NLG DOORS CLOSED, SYS 1), [31GA] (PROX SNSR-NLG DOORS CLOSED, SYS 2)
     (j) FOR [32GA] (PROX SNSR-R L/G DOOR OPEN, SYS 1), [33GA] (PROX SNSR-L L/G DOOR OPEN, SYS 1), [34GA] (PROX SNSR-R L/G DOOR OPEN, SYS 2), [35GA] (PROX SNSR-L L/G DOOR OPEN, SYS 2)
     (k) FOR [36GA] (PROX SNSR-NLG R DOOR OPEN, SYS 1), [37GA] (PROX SNSR-NLG L DOOR OPEN, SYS 1), [38GA] (PROX SNSR-NLG R DOOR OPEN, SYS 2), [39GA] (PROX SNSR-NLG L DOOR OPEN, SYS 2)
     (l) FOR [5MJ] (SW-LOCKING SHAFT), [12MJ] (SW-LOCKING SHAFT)
     (m) FOR [28WV] (PROX SW-HANDLE, FWD CARGO COMPT DOOR), [34WV] (PROX SW-HANDLE, AFT CARGO COMPT DOOR)
     (n) FOR [30WV] (PROX SW-FRAME, FWD CARGO COMPT DOOR), [32WV] (PROX SW-FRAME, AFT CARGO COMPT DOOR)
Subtask 32-31-73-960-051-C ** ON A/C NOT FOR ALL
D. Adjustment/Replacement of the Proximity Sensors/Switches
   (1) If the recorded inductance values are not as specified:
  • do a resistance check of the proximity sensor/switch (Ref. AMM TASK 32-31-73-820-009)
  • do a check of the proximity sensor/switch and the target and (if possible) adjust the target clearance
    or
  • replace the defective proximity sensor/switch:
     (a) FOR [37CV] (SENSOR-L FLAP ATTACHMENT FAILURE DETECTION), [38CV] (SENSOR-R FLAP ATTACHMENT FAILURE DETECTION), [39CV] (SENSOR-L FLAP ATTACHMENT FAILURE DETECTION), [40CV] (SENSOR-R FLAP ATTACHMENT FAILURE DETECTION)
     (b) FOR [8GA] (PROX SNSR-R L/G UPLK, SYS 1), [9GA] (PROX SNSR-L L/G UPLK, SYS 1), [10GA] (PROX SNSR-R L/G UPLK, SYS 2), [11GA] (PROX SNSR-L L/G UPLK, SYS 2)
     (c) FOR [12GA] (PROX SNSR-NLG UPLK, SYS 1), [13GA] (PROX SNSR-NLG UPLK, SYS 2)
     (d) FOR [14GA] (PROX SNSR-R L/G DNLK, SYS 1), [15GA] (PROX SNSR-L L/G DNLK, SYS 1), [16GA] (PROX SNSR-R L/G DNLK, SYS 2), [17GA] (PROX SNSR-L L/G DNLK, SYS 2)
     (e) FOR [18GA] (PROX SNSR-NLG DNLK, SYS 1), [19GA] (PROX SNSR-NLG DNLK, SYS 2)
     (f) FOR [20GA] (PROX SNSR-R L/G EXT, SYS 1), [21GA] (PROX SNSR-L L/G EXT, SYS 1), [22GA] (PROX SNSR-R L/G EXT, SYS 2), [23GA] (PROX SNSR-L L/G EXT, SYS 2)
     (g) FOR [24GA] (PROX SNSR-NLG EXT, SYS 1), [25GA] (PROX SNSR-NLG EXT, SYS 2)
     (h) FOR [26GA] (PROX SNSR-R L/G DOOR CLOSED, SYS 1), [27GA] (PROX SNSR-L L/G DOOR CLOSED, SYS 1), [28GA] (PROX SNSR-R L/G DOOR CLOSED, SYS 2), [29GA] (PROX SNSR-L L/G DOOR CLOSED, SYS 2)
     (i) FOR [30GA] (PROX SNSR-NLG DOORS CLOSED, SYS 1), [31GA] (PROX SNSR-NLG DOORS CLOSED, SYS 2)
     (j) FOR [32GA] (PROX SNSR-R L/G DOOR OPEN, SYS 1), [33GA] (PROX SNSR-L L/G DOOR OPEN, SYS 1), [34GA] (PROX SNSR-R L/G DOOR OPEN, SYS 2), [35GA] (PROX SNSR-L L/G DOOR OPEN, SYS 2)
     (k) FOR [36GA] (PROX SNSR-NLG R DOOR OPEN, SYS 1), [37GA] (PROX SNSR-NLG L DOOR OPEN, SYS 1), [38GA] (PROX SNSR-NLG R DOOR OPEN, SYS 2), [39GA] (PROX SNSR-NLG L DOOR OPEN, SYS 2)
     (l) FOR [5MJ] (SW-LOCKING SHAFT), [12MJ] (SW-LOCKING SHAFT)
     (m) FOR [28WV] (PROX SW-HANDLE, FWD CARGO COMPT DOOR), [34WV] (PROX SW-HANDLE, AFT CARGO COMPT DOOR)
     (n) FOR [30WV] (PROX SW-FRAME, FWD CARGO COMPT DOOR), [32WV] (PROX SW-FRAME, AFT CARGO COMPT DOOR)
Subtask 32-31-73-860-071-A
E. Aircraft Maintenance Configuration
WARNING: MAKE SURE THAT THE TRAVEL RANGES OF THE FLIGHT CONTROLS SURFACES ARE CLEAR. MOVEMENT OF FLIGHT CONTROLS CAN CAUSE INJURY TO PERSONS AND/OR DAMAGE TO EQUIPMENT.
   (1) Install the two LGCIUs (Ref. AMM TASK 32-31-71-400-001).
   (2) If necessary, extend the landing gear (Ref. AMM TASK 32-30-00-867-002).
   (3) If necessary, lower the aircraft off the jacks (Ref. AMM TASK 07-11-00-586-002).
   (4) Remove the 98D27803000000 LOCKING TOOL-FLAP SLAT LEVER,INT. POSITION from the flap/slat control lever.
   (5) Fully retract the flaps (Ref. AMM TASK 27-50-00-866-009).
5. Close-up
Subtask 32-31-73-942-063-A
A. Close Access
   (1) Make sure that the work area is clean and clear of tools and other items.
   (2) Close the NLG doors (Ref. AMM TASK 32-22-00-410-001).
   (3) Close the MLG doors (Ref. AMM TASK 32-12-00-410-001).
   (4) Remove the SAFETY BARRIER(S).
   (5) Remove the ground support and maintenance equipment, the special and standard tools and all other items.
   (6) Remove the WARNING NOTICE(S).
[Rev.10 from 2021] 2026.04.01 00:46:05 UTC
"Aviabrain" 2025