DOC AIRBUS | TSM A320FRudder Pedals not Locked in AP Mode
TASK 27-93-00-810-941-A
Rudder Pedals not Locked in AP Mode
1. Possible Causes
A. Referenced Information
3. Fault Confirmation
Subtask 27-93-00-710-058-A
Subtask 27-93-00-865-055-A
[Rev.8 from Aug 2018]
2026.04.04 04:28:07 UTC
Rudder Pedals not Locked in AP Mode
1. Possible Causes
- FMGC-1 [1CA1]
- RELAY-RUDDER ARTF FEEL 1 [15CA1]
wiring of the RUDDER LOCK COM and RUDDER LOCK MON signals from the FMGC1 to the relay (15CA1) wiring from the relay (15CA1) to the first terminal block - FMGC-2 [1CA2]
- RELAY-RUDDER ARTF FEEL 2 [15CA2]
wiring of the RUDDER LOCK COM and RUDDER LOCK MON signals from the FMGC2 to the relay (15CA2) wiring from the relay (15CA2) to the first terminal block - SOLENOID-RUDDER ARTF FEEL [16CA]
- C/B-AUTO FLT/RUDDER/ARTF/FEEL [14CA]
wiring from the circuit breaker (14CA) to the first terminal block
A. Referenced Information
| REFERENCE | DESIGNATION |
|---|---|
| AMM 22-10-00-710-002 | Operational Test of Autopilot Disengagement and Locking Devices of the Side Stick Controller and Rudder Pedals |
| AMM 22-83-34-000-001 | Removal of the FMGC |
| AMM 22-83-34-400-001 | Installation of the FMGC |
| AIPC 22840801 | |
| AIPC 22840802 | |
| ASM 228501 | |
| AMM 27-23-17-000-001 | Removal of the Artificial Feel Unlocking Solenoid |
| AMM 27-23-17-400-001 | Installation of the Artificial Feel Unlocking Solenoid |
Subtask 27-93-00-710-058-A
A. Test
Do the operational test of autopilot disengagement and locking devices of the side stick controller and rudder pedals AMM 22-10-00-710-002.
4. Fault IsolationDo the operational test of autopilot disengagement and locking devices of the side stick controller and rudder pedals AMM 22-10-00-710-002.
Subtask 27-93-00-865-055-A
A. Table of the circuit breakers used in this procedure:
Subtask 27-93-00-810-208-A | PANEL | DESIGNATION | FIN | LOCATION |
|---|---|---|---|
| ** ON A/C ALL | |||
| 121VU | AUTO FLT/RUDDER/ARTF/FEEL | 14CA | N17 |
B. If the rudder pedals are not locked with AP1 engaged:
(1) Replace the FMGC-1 [1CA1] AMM 22-83-34-000-001 and AMM 22-83-34-400-001.
(2) If the fault continues:
Subtask 27-93-00-810-209-A (1) Replace the FMGC-1 [1CA1] AMM 22-83-34-000-001 and AMM 22-83-34-400-001.
(2) If the fault continues:
- replace the RELAY-RUDDER ARTF FEEL 1 [15CA1] AIPC 22840802.
- do a check of the
wiring of the RUDDER LOCK COM and RUDDER LOCK MON signals from the FMGC1 to the relay (15CA1) ASM 228501. - do a check and repair the
wiring from the relay (15CA1) to the first terminal block , pins A/A1 and A/A2 to the terminal block 1871VT ASM 228501.
C. If the rudder pedals are not locked with AP2 engaged:
(1) Replace the FMGC-2 [1CA2] AMM 22-83-34-000-001 and AMM 22-83-34-400-001.
(2) If the fault continues:
Subtask 27-93-00-810-210-A (1) Replace the FMGC-2 [1CA2] AMM 22-83-34-000-001 and AMM 22-83-34-400-001.
(2) If the fault continues:
- replace the RELAY-RUDDER ARTF FEEL 2 [15CA2] AIPC 22840802.
- do a check of the
wiring of the RUDDER LOCK COM and RUDDER LOCK MON signals from the FMGC2 to the relay (15CA2) ASM 228501. - do a check and repair the
wiring from the relay (15CA2) to the first terminal block , pins A/A1 and A/A2 to the terminal block 1871VT ASM 228501.
D. If the rudder pedals are not locked with AP1 then AP2 engaged:
(1) Replace the SOLENOID-RUDDER ARTF FEEL [16CA] AMM 27-23-17-000-001 and AMM 27-23-17-400-001.
(2) If the fault continues:
Subtask 27-93-00-710-059-A (1) Replace the SOLENOID-RUDDER ARTF FEEL [16CA] AMM 27-23-17-000-001 and AMM 27-23-17-400-001.
(2) If the fault continues:
- replace the C/B-AUTO FLT/RUDDER/ARTF/FEEL [14CA] AIPC 22840801
- do a check and repair the
wiring from the circuit breaker (14CA) to the first terminal block , pin 2 to the terminal block 1871VT ASM 228501.
E. Do the test given in Para. 3.