The SLIDE ARMED indicator light of the left aft passenger-crew door is inoperative in flight

TASK 52-13-00-810-810-A
The SLIDE ARMED indicator light of the left aft passenger-crew door is inoperative in flight

1. Possible Causes

IND LT-SLIDE ARMED, AFT L DOOR [3WN1]
wiring from the proximity switch (17WV1) to the indicator light (3WN1)
wiring from the proximity switch (17WV1) pin C to the ground
wiring from the indicator light (3WN1) to the indicator light (2WN1)
IND LT-SLIDE ARMED, L EMER EXIT [2WN1]
wiring from the indicator light (2WN1) to the indicator light (1WN1)
IND LT-SLIDE ARMED, FWD L DOOR [1WN1]
wiring from the indicator light (1WN1) to the relay (12WN)
RELAY-PWR SPLY SWITCHOVER [12WN]
wiring from the relay (12WN) to the circuit breaker (15WN)
C/B-EIS/SLIDES/ARM AND WARN/FLT [15WN]

2. Job Set-up Information
A. Referenced Information

REFERENCE	DESIGNATION
TSM TASK 24-00-00-810-803-A	Circuit Breaker Tripped and/or C/B TRIPPED Warning
AMM 24-41-00-861-002	Energize the Aircraft Electrical Circuits from the External Power
AMM 24-41-00-862-002	De-energize the Aircraft Electrical Circuits Supplied from the External Power
AMM 25-62-44-000-002	Removal of the Left-Hand Escape-Slide Pack-Assembly
AMM 25-62-44-000-012	Removal of the Left-Hand Escape-Slide-Raft Pack-Assembly
AMM 25-62-44-400-006	Installation of the Left-Hand Escape-Slide Pack-Assembly
AMM 25-62-44-400-007	Installation of the Left-Hand Escape-Slide-Raft Pack-Assembly
ASM 315405
AMM 52-10-00-860-001	Special Precautions before Work on the Passenger/Crew Door
AMM 52-10-00-860-002	Special Precautions after Work on the Passenger/Crew Door
ASM 527301
AMM 52-73-21-000-001	Removal of the SLIDE ARMED Indicator-Light of the FWD Passenger/Crew Door
AMM 52-73-21-000-002	Removal of the SLIDE ARMED Indicator-Light of the Aft Passenger/Crew Door
AMM 52-73-21-000-003	Removal of the SLIDE ARMED Indicator-Light of the Emergency Exit
AMM 52-73-21-400-001	Installation of the SLIDE ARMED Indicator-Light of the FWD Passenger/Crew Door
AMM 52-73-21-400-002	Installation of the SLIDE ARMED Indicator-Light of the Aft Passenger/Crew Door
AMM 52-73-21-400-003	Installation of the SLIDE ARMED Indicator-Light of the Emergency Exit

3. Fault Confirmation
Subtask 52-13-00-860-056-A

A. Aircraft Maintenance Configuration
(1) Energize the aircraft electrical circuits
AMM 24-41-00-861-002.
(2) Disarm the percussion system of the door damper and emergency operation cylinder AMM 52-10-00-860-001.
(3) Remove the escape slide or escape slide/raft pack assembly AMM 25-62-44-000-002 or AMM 25-62-44-000-012.

Subtask 52-13-00-865-059-A

B. Make sure that this(these) circuit breaker(s) is(are) closed:

PANEL	DESIGNATION	FIN	LOCATION
** ON A/C ALL
121VU	EIS/SLIDES/ARM AND WARN/GND	13WN	P10

Subtask 52-13-00-710-056-A

C. Test

ACTION	RESULT
Open the left aft passenger/crew-door with the escape slide handle in the ARMED position.	Make sure that the SLIDE ARMED indicator-light of the left aft passenger/crew-door is not on.

4. Fault Isolation
Subtask 52-13-00-810-053-A

A. If the test confirms the fault:

Do a check of the circuit breaker 15WN status ASM 527301.

(1) If the circuit breaker is closed:

Do a check for 28VDC at pin A of the indicator light (3WN1) ASM 527301.

(a) If there is 28VDC:

Replace the IND LT-SLIDE ARMED, AFT L DOOR [3WN1] AMM 52-73-21-000-002 and AMM 52-73-21-400-002.

1 If the fault continues:

Do a check for a ground signal at pin C of the proximity switch (17WV1) ASM 315405.

a If there is a ground signal:

Do a check and repair the wiring from the proximity switch (17WV1) to the indicator light (3WN1) pin B to pin F ASM 315405 and ASM 527301.

b If there is no ground signal:

Repair the wiring from the proximity switch (17WV1) pin C to the ground, ASM 315405.

(b) If there is no 28VDC:

Do a check and repair the wiring from the indicator light (3WN1) to the indicator light (2WN1) pin A to pin B ASM 527301 and ASM 527301.

1 If the fault continues:

Replace the IND LT-SLIDE ARMED, L EMER EXIT [2WN1] AMM 52-73-21-000-003 and AMM 52-73-21-400-003.

2 If the fault continues:

Do a check and repair the wiring from the indicator light (2WN1) to the indicator light (1WN1) pin A to pin B ASM 527301.

3 If the fault continues:

Replace the IND LT-SLIDE ARMED, FWD L DOOR [1WN1] AMM 52-73-21-000-001 and AMM 52-73-21-400-001.

4 If the fault continues:

Do a check and repair the wiring from the indicator light (1WN1) to the relay (12WN) pin A to pin A/B2 ASM 527301.

5 If the fault continues:

Replace the RELAY-PWR SPLY SWITCHOVER [12WN] , ASM 527301.

6 If the fault continues:

Do a check and repair the wiring from the relay (12WN) to the circuit breaker (15WN) pin A/B1 to pin 2 ASM 527301.

7 If the fault continues:

Replace the C/B-EIS/SLIDES/ARM AND WARN/FLT [15WN] , ASM 527301.

(2) If the circuit breaker is open:

Do the procedure (Ref. TSM TASK 24-00-00-810-803).

(a) If the fault continues:

replace the C/B-EIS/SLIDES/ARM AND WARN/FLT [15WN] , ASM 527301.

Subtask 52-13-00-710-057-A

B. Test

ACTION	RESULT
Open the left aft passenger/crew-door with the escape slide handle in the ARMED position.	Make sure that the SLIDE ARMED white indicator light of the left aft passenger/crew-door is on.

5. Close-up
Subtask 52-13-00-860-057-A

A. Aircraft Maintenance Configuration
(1) Install the escape slide or escape slide/raft pack assembly AMM 25-62-44-400-006 or AMM 25-62-44-400-007.
(2) Arm the percussion system of the door damper and emergency operation cylinder AMM 52-10-00-860-002.
(3) De-energize the aircraft electrical circuits
AMM 24-41-00-862-002.

[Rev.8 from Aug 2018] 2026.04.04 04:34:47 UTC