W DOC AIRBUS | TSM A320F

Loss of the Side Stick Priority Indication on the Glareshield Panel

TASK 27-95-00-810-834-A
Loss of the Side Stick Priority Indication on the Glareshield Panel

1. Possible Causes
  • RELAY-F/O W ANN SPLY [42CE2]
  • FCDC-1 [3CE1]
  • BOARD-ANN LT TEST & INTFC [2LP]
  • RELAY-CAPT G ANN SPLY [42CE3]
  • RELAY-CAPT W ANN SPLY [42CE1]
  • RELAY-F/O G ANN SPLY [42CE4]
  • FCDC-2 [3CE2]
  • BOARD-ANN LT TEST & INTFC [19LP]
  • ANN-SIDE STICK PRIORITY, F/O [23CE2]
  • ANN-SIDE STICK PRIORITY, CAPT [23CE1]
  • wiring
2. Job Set-up Information
 A. Referenced Information
REFERENCE
DESIGNATION
AIPC 27920802
AIPC 27920803
ASM 279504
ASM 279505
AMM 27-95-34-000-001
Removal of the FCDC
AMM 27-95-34-400-001
Installation of the FCDC
AMM 27-96-00-710-003
Operational Test of the Side Stick Priority
AIPC 33140803
3. Fault Confirmation
Subtask 27-95-00-700-051-A
A. Test
Do the operational test of the side stick priority AMM 27-96-00-710-003.
4. Fault Isolation
Subtask 27-95-00-810-083-A
A. If, during the test, with circuit breaker 20CE2 open (circuit breaker 20CE1 closed), then with circuit breaker 20CE1 open (circuit breaker 20CE2 closed):
  • The red arrow of the F/O SIDE STICK PRIORITY annunciator does not come on when you push the CAPT takeover and priority pushbutton switch:
   (1) Remove the RELAY-F/O W ANN SPLY [42CE2] .
   (2) Do a check of the resistance of the relay between pin X1 and X2.
     (a) If the resistance is less than 280 ohms:
     (b) If the resistance is more than 400 ohms
  • install a new F/O W ANN SPLY relay (42CE2) AIPC 27920803
  • see Para. (3).
     (c) If the resistance is between 280 and 400 ohms:
  • install the F/O W ANN SPLY relay (42CE2)
  • See Para. (3).
   (3) If the fault continues:
     (a) Replace the FCDC-1 [3CE1] AMM 27-95-34-000-001 AMM 27-95-34-400-001.
   (4) If the fault continues:
     (a) Replace the RELAY-F/O W ANN SPLY [42CE2] AIPC 27920803.
   (5) If the fault continues:
     (a) Do a check of the wiring between the F/O W ANN SPLY relay (42CE2) pin X2 and the FCDC-1 [3CE1] ASM 279504.
     (b) Do a check of the wiring between the F/O W ANN SPLY relay (42CE2) pin A1 and the ground.
     (c) Do a check of the wiring between the F/O W ANN SPLY relay (42CE2) pin X1 and the first terminal block.
Subtask 27-95-00-810-084-A
B. If, during the test, with circuit breaker 20CE2 opened (circuit breaker 20CE1 closed):
  • the CAPT legend of the SIDE STICK PRIORITY annunciator does not come on when you move the F/O side stick:
   (1) Replace the FCDC-1 [3CE1] AMM 27-95-34-000-001 AMM 27-95-34-400-001.
   (2) If the fault continues:
     (a) Replace the BOARD-ANN LT TEST & INTFC [2LP] AIPC 33140803.
   (3) If the fault continues:
     (a) Replace the RELAY-CAPT G ANN SPLY [42CE3] AIPC 27920803.
   (4) If the fault continues:
     (a) Do a check of the wiring between the ANN LT TEST & INTFC BOARD pin 23 and the FCDC 1 (3CE1) ASM 279504.
     (b) Do a check of the wiring between pin 3 and pin 25 of the ANN LT TEST & INTFC board (2LP).
     (c) Do a check of the wiring between the ANN LT TEST & INTFC board (2LP) pin 4 and the first terminal block.
     (d) Do a check of the wiring between the ANN LT TEST & INTFC board (2LP) pin 22 and the CAPT G ANN SPLY relay (42CE3) pin A3.
Subtask 27-95-00-810-085-A
C. If during the test, with circuit breaker 20CE2 open (circuit breaker 20CE1 closed):
  • the red arrow of the CAPT SIDE STICK PRIORITY annunciator does not come on when you push the F/O takeover and priority pushbutton switch:
   (1) Replace the FCDC 1 (3CE1) AMM 27-95-34-000-001 AMM 27-95-34-400-001.
   (2) If the fault continues:
     (a) Replace the BOARD-ANN LT TEST & INTFC [2LP] AIPC 33140803
   (3) If the fault continues:
     (a) Replace the RELAY-CAPT W ANN SPLY [42CE1] AIPC 27920803.
   (4) If the fault continues:
     (a) Do a check of the wiring between the ANN LT TEST & INTFC board (2LP) and the FCDC 1(3CE1) ASM 279504.
     (b) Do a check of the wiring between the ANN LT TEST & INTFC board (2LP) pin 4 and the first terminal block.
     (c) Do a check of the wiring between the ANN LT TEST & INTFC board (2LP) pin 1 and the CAPT W ANN SPLY relay (42CE1) pin A3.
Subtask 27-95-00-810-086-A
D. If during the test, with circuit breaker 20CE2 open (circuit breaker 20CE1 closed):
  • the F/O legend of the SIDE STICK PRIORITY annunciator does not come on when you move the CAPT side stick:
   (1) Remove the RELAY-F/O G ANN SPLY [42CE4] .
   (2) Do a check of the resistance of the relay between pin X1 and X2.
     (a) If the resistance is less than 280 ohms:
     (b) If the resistance is more than 400 ohms:
  • install a new F/O G ANN SPLY relay (42CE4) AIPC 27920803
  • See para. (3).
     (c) If the resistance is between 280 and 400 oOhms:
  • install the F/O G ANN SPLY relay (42CE4)
  • see Para. (3).
   (3) If the fault continues:
     (a) Replace the FCDC-1 [3CE1] AMM 27-95-34-000-001 AMM 27-95-34-400-001.
   (4) If the fault continues:
     (a) Replace the RELAY-F/O G ANN SPLY [42CE4] AIPC 27920803.
   (5) If the fault continues:
     (a) Do a check of the wiring between the F/O G ANN SPLY relay (42CE4) pin X2 and the FCDC 1 (3CE1) ASM 279504.
     (b) Do a check of the wiring between the F/O G ANN SPLY relay (42CE4) pin A1 and the ground.
     (c) Do a check of the wiring between the F/O G ANN SPLY relay (42CE4) pin X1 and the first terminal block.
Subtask 27-95-00-810-087-A
E. If, during the test, with circuit breaker 20CE1 open (circuit breaker 20CE2 closed):
  • The red arrow of the F/O SIDE STICK PRIORITY annunciator does not come on when you push the CAPT takeover and priority pushbutton switch:
   (1) Replace the FCDC-2 [3CE2] AMM 27-95-34-000-001 AMM 27-95-34-400-001.
   (2) If the fault continues:
     (a) Replace the BOARD-ANN LT TEST & INTFC [19LP] AIPC 33140803.
   (3) If the fault continues:
     (a) Replace the RELAY-F/O W ANN SPLY [42CE2] AIPC 27920803.
   (4) If the fault continues:
     (a) Do a check of the wiring between the ANN LT TEST & INTFC board (19LP) pin 38 and the FCDC 2 (3CE2) ASM 279505.
     (b) Do a check of the wiring between the ANN LT TEST & INTFC board (19LP) pin 39 and the first terminal block.
     (c) Do a check of the wiring between the ANN LT TEST & INTFC board (19LP) pin 37 and the F/O W ANN SPLY relay (42CE2) pin A3.
Subtask 27-95-00-810-088-A
F. If, during the test, with circuit breaker 20CE2 open (circuit breaker 20CE1 closed):
  • the F/O legend of the SIDE STICK PRIORITY annunciator does not come on when you move the CAPT side stick:
   (1) Remove the RELAY-CAPT G ANN SPLY [42CE3] .
   (2) Do a check of the resistance of the relay between pin X1 and X2.
     (a) If the resistance is less than 280 ohms:
     (b) If the resistance is more than 400 ohms:
  • install a new CAPT G ANN SPLY relay (42CE3) AIPC 27920803.
  • see Para. (3).
     (c) If the resistance is between 280 and 400 ohms:
  • install the CAPT G ANN SPLY relay (42CE3)
  • see Para. (3).
   (3) If the fault continues:
     (a) Replace the FCDC-2 [3CE2] AMM 27-95-34-000-001 AMM 27-95-34-400-001.
   (4) If the fault continues:
     (a) Replace the RELAY-CAPT G ANN SPLY [42CE3] AIPC 27920803.
   (5) If the fault continues:
     (a) Do a check of the wiring between the CAPT G ANN SPLY relay (42CE3) pin X2 and the FCDC 2(3CE2) ASM 279505.
     (b) Do a check of the wiring between the CAPT G ANN SPLY relay (42CE3) pin A1 and the ground.
     (c) Do a check of the wiring between the CAPT G ANN SPLY relay (42CE3) pin X1 and the first terminal block.
Subtask 27-95-00-810-089-A
G. If, during the test, with circuit breaker 20CE1 open (circuit breaker 20CE2 closed):
  • the red arrow of the CAPT SIDE STICK PRIORITY annunciator does not come on when you push the F/O takeover and priority pushbutton switch:
   (1) Remove the RELAY-CAPT W ANN SPLY [42CE1] .
   (2) Do a check of the resistance of the relay between pin X1 and X2.
     (a) If the resistance is less than 280 ohms:
     (b) If the resistance is more than 400 ohms:
  • install a new CAPT W ANN SPLY relay (42CE1) AIPC 27920803.
  • see para. (3).
     (c) If the resistance is between 280 and 400 ohms:
  • install the CAPT W ANN SPLY (42CE1).
  • see Para. (3).
   (3) If the fault continues:
     (a) Replace the FCDC-2 [3CE2] AMM 27-95-34-000-001 AMM 27-95-34-400-001.
   (4) If the fault continues:
     (a) Replace the RELAY-CAPT W ANN SPLY [42CE1] AIPC 27920803.
   (5) If the fault continues:
     (a) Do a check of the wiring between the CAPT W ANN SPLY relay (42CE1) pin X2 and the FCDC 2 (3CE2) ASM 279505.
     (b) Do a check of the wiring between the CAPT W ANN SPLY relay (42CE1) pin A1 and the ground.
     (c) Do a check of the wiring between the CAPT W ANN SPLY relay (42CE1) pin X1 and the first terminal block.
Subtask 27-95-00-810-090-A
H. If, during the test, with circuit breaker 20CE2 open (circuit breaker 20CE1 closed), then with circuit breaker 20CE1 open (circuit breaker 20CE2 closed):
  • The red arrow of the F/O SIDE STICK PRIORITY annunciator does not come on when you push the CAPT takeover and priority pushbutton switch:
   (1) Replace the ANN-SIDE STICK PRIORITY, F/O [23CE2] AIPC 27920802.
   (2) If the fault continues:
     (a) Replace the RELAY-F/O W ANN SPLY [42CE2] AIPC 27920803.
   (3) If the fault continues:
     (a) Do a check of the wiring between the F/O SIDE STICK PRIORITY annunciator (23CE2) pin 7 and the F/O W ANN SPLY relay (42CE2) pin A2 ASM 279505.
Subtask 27-95-00-810-091-A
I. If, during the test, with circuit breaker 20CE2 open (circuit breaker 20CE1 closed), then with circuit breaker 20CE1 open (circuit breaker 20CE2 closed):
  • the CAPT legend of the SIDE STICK PRIORITY annunciator does not come on when you move the F/O side stick:
   (1) Replace the ANN-SIDE STICK PRIORITY, CAPT [23CE1] AIPC 27920802.
   (2) If the fault continues:
     (a) Replace the RELAY-CAPT G ANN SPLY [42CE3] AIPC 27920803.
   (3) If the fault continues:
     (a) Do a check of the wiring between the CAPT SIDE STICK PRIORITY annunciator (23CE1) pin 4 and the CAPT G ANN SPLY relay (42CE3) pin A2 ASM 279505.
Subtask 27-95-00-810-092-A
J. If, during the test, with circuit breaker 20CE2 open (circuit breaker 20CE1 closed), then with circuit breaker 20CE1 open ( circuit breaker 20CE2 closed):
  • the red arrow of the CAPT SIDE STICK PRIORITY annunciator does not come on when you push the F/O takeover and priority pushbutton switch:
   (1) Replace the ANN-SIDE STICK PRIORITY, CAPT [23CE1] AIPC 27920802.
   (2) If the fault continues:
     (a) Replace the RELAY-CAPT W ANN SPLY [42CE1] AIPC 27920803.
   (3) If the fault continues:
     (a) Do a check of the wiring between the CAPT SIDE STICK PRIORITY annunciator (23CE1) pin 7 and the CAPT W ANN SPLY relay (42CE1) pin A2 ASM 279504.
Subtask 27-95-00-810-093-A
K. If, during the test, with circuit breaker 20CE2 open (circuit breaker 20CE1 closed), then with circuit breaker 20CE1 open (circuit breaker 20CE2 closed):
  • the F/O legend of the SIDE STICK PRIORITY annunciator does not come on when you move the CAPT side stick:
   (1) Replace the ANN-SIDE STICK PRIORITY, F/O [23CE2] AIPC 27920802.
   (2) If the fault continues:
     (a) Replace the RELAY-F/O G ANN SPLY [42CE4] AIPC 27920803.
   (3) If the fault continues:
     (a) Do a check of the wiring between the F/O SIDE STICK PRIORITY annunciator (23CE2) pin 4 and the F/O G ANN SPLY relay (42CE4) pin A2 ASM 279505.
Subtask 27-95-00-700-052-A
L. Do the test given in Para. 3.
[Rev.8 from Aug 2018] 2026.04.04 04:28:24 UTC
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