W DOC AIRBUS | TSM A320F

Loss of the Reception of the RT ENGD Feedback Discrete by the FAC 2


TASK 22-62-00-810-808-A
Loss of the Reception of the RT ENGD Feedback Discrete by the FAC 2


1. Possible Causes
  • FAC-2 [1CC2]
  • wiring of the RUD TR ENGD COM and RUD TR ENGD MON discretes (from the FAC 2 (1CC2) to the first terminal block)
  • wiring of the RUD TR OWN ENGD COM and RUD TR OWN ENGD MON discretes (from the FAC 2 (1CC2) to the first terminal block)
  • ACTUATOR-RUDDER TRIM [10CC]
2. Job Set-up Information
 A. Referenced Information
REFERENCE
DESIGNATION
AMM 22-60-00-710-002
Operational Test of the Automatic Change-Over Function
AMM 22-66-34-000-002
Removal of the FAC
AMM 22-66-34-400-002
Installation of the FAC
ASM 226803
AMM 22-96-00-710-001
Operational Test of the AFS
AMM 27-22-51-000-001
Removal of the Rudder Trim Actuator
AMM 27-22-51-400-001
Installation of the Rudder Trim Actuator
3. Fault Confirmation
Subtask 22-62-00-710-064-A
A. Test
   (1) Do the operational test of the AFS AMM 22-96-00-710-001 and read the result for the FAC 2.
   (2) Do the operational test of the automatic change-over function AMM 22-60-00-710-002.
4. Fault Isolation
Subtask 22-62-00-810-065-A
A. If the operational test of the AFS gives the maintenance message AFS: FAC2/RT ENGD FDBK:
   (1) If the operational test of the automatic change-over function gives the maintenance message AFS: FAC1/RT ENGD CHG-OV:
     (a) If the fault continues:
  • do a check and repair the wiring of the RUD TR ENGD COM and RUD TR ENGD MON discretes (from the FAC 2 (1CC2) to the first terminal block), ASM 226803.
   (2) If the operational test of the automatic change-over function does not give the maintenance message AFS: FAC1/RT ENGD CHG-OV:
     (a) If the fault continues:
  • do a check and repair the wiring of the RUD TR OWN ENGD COM and RUD TR OWN ENGD MON discretes (from the FAC 2 (1CC2) to the first terminal block), ASM 226803.
       1 If the fault continues:
Subtask 22-62-00-710-065-A
B. Do the test given in Para. 3.A.(1).
[Rev.8 from Aug 2018] 2026.04.04 04:25:11 UTC