Loss of the TCAS Function of the FMGC Detected by the FAC

TASK 22-66-00-810-902-A
Loss of the TCAS Function of the FMGC Detected by the FAC

1. Possible Causes

wiring from the T2CAS computer pins AE/7C, 7D to the FMGC 1 pins AB/3J, 3K and AD/12A, 12B
wiring from the T2CAS computer pins AE/7G, 7H to the FMGC 2 pins AB/3J, 3K and AD/12A, 12B
wiring from the FAC 1 pins AB/10J, 10K to the terminal block 1860VT

2. Job Set-up Information
A. Referenced Information

REFERENCE	DESIGNATION
AWM 226909
ASM 228601
AWM 228618

3. Fault Confirmation
Subtask 22-66-00-740-053-A ** ON A/C NOT FOR ALL

A. Not applicable, you cannot confirm this fault on the ground.

4. Fault Isolation
Subtask 22-66-00-810-187-A ** ON A/C NOT FOR ALL

A. On the Post Flight Report (PFR), do a check for a maintenance message related to the TCAS failure:
(1) If there is a maintenance message related to the TCAS failure:

Do the related trouble shooting procedure.

(2) If there is no maintenance message related to the TCAS failure:

On the PFR, do a check for a maintenance message related to the FMGC/TCAS:

(a) If there is a maintenance message related to the FMGC/TCAS:

For FMGC 1, do a check and repair the wiring from the T2CAS computer pins AE/7C, 7D to the FMGC 1 pins AB/3J, 3K and AD/12A, 12B ASM 228601.
For FMGC 2, do a check and repair the wiring from the T2CAS computer pins AE/7G, 7H to the FMGC 2 pins AB/3J, 3K and AD/12A, 12B ASM 228601.

(b) If there is no maintenance message related to the FMGC/TCAS:

Do a check and repair the wiring from the FAC 1 pins AB/10J, 10K to the terminal block 1860VT AWM 226909 AWM 228618.

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