Loss of the Rudder Travel-Limiting Change-Over between the FAC 1 and the FAC 2

TASK 22-66-00-810-818-A
Loss of the Rudder Travel-Limiting Change-Over between the FAC 1 and the FAC 2

1. Possible Causes

FAC-2 [1CC2]
wiring of the RTL OPP ENGD COM and RTL OPP ENGD MON discretes (from the FAC 2 (1CC2) to the first terminal block)
LIMITATION UNIT-RUDDER TRAVEL [4CC]

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 226802
AMM 22-96-00-710-001	Operational Test of the AFS
AMM 27-23-51-000-001	Removal of the Rudder Travel Limitation Unit
AMM 27-23-51-400-001	Installation of the Rudder Travel-Limitation Unit

3. Fault Confirmation
Subtask 22-66-00-710-082-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.

4. Fault Isolation
Subtask 22-66-00-810-067-A

A. If the test gives the maintenance message AFS: FAC 2/RTL ENGD CHG-OV:

(1) If the fault continues:

do a check and repair the wiring of the RTL OPP ENGD COM and RTL OPP ENGD MON discretes (from the FAC 2 (1CC2) to the first terminal block), ASM 226802.

(a) If the fault continues:

replace the LIMITATION UNIT-RUDDER TRAVEL [4CC] , AMM 27-23-51-000-001 and AMM 27-23-51-400-001.

Subtask 22-66-00-710-083-A

B. Do the operational test of the automatic change-over function AMM 22-60-00-710-002.

[Rev.8 from Aug 2018] 2026.04.04 04:25:17 UTC