Rudder Trim-Control Switch Inoperative in the Two Directions with the FAC 1

TASK 22-62-00-810-804-A
Rudder Trim-Control Switch Inoperative in the Two Directions with the FAC 1

1. Possible Causes

wiring of the ground signal at the rudder trim-control switch (9CC)
CTL SW-RUDDER TRIM [9CC]

2. Job Set-up Information
A. Referenced Information

REFERENCE	DESIGNATION
AMM 22-62-00-710-001	Operational Test of the Rudder Trim Function
ASM 226803
AMM 22-96-00-710-001	Operational Test of the AFS

3. Fault Confirmation
Subtask 22-62-00-710-056-A

A. Test
(1) Do the operational test of the AFS (turn the rudder trim-control switch (9CC) clockwise, then counterclockwise) AMM 22-96-00-710-001 and read the result for the FAC 1.

4. Fault Isolation
Subtask 22-62-00-810-058-A

A. If the two tests give the maintenance message AFS: FAC1/RT CTRL SW 9CC:

do a check and repair the wiring of the ground signal at the rudder trim-control switch (9CC) pin 3 ASM 226803.

Subtask 22-62-00-810-059-A

B. If the two tests do not give the maintenance message AFS: FAC1/RT CTRL SW 9CC:

replace the CTL SW-RUDDER TRIM [9CC] .

Subtask 22-62-00-710-057-A

C. Do the operational test of the rudder trim function AMM 22-62-00-710-001.

[Rev.8 from Aug 2018] 2026.04.04 04:25:11 UTC