Loss of the FMGC1 Data Input to the ATC/Mode S Transponder 1

TASK 34-52-00-810-824-A
Loss of the FMGC1 Data Input to the ATC/Mode S Transponder 1

1. Possible Causes

2. Job Set-up Information
A. Referenced Information

REFERENCE	DESIGNATION
AMM 22-83-34-000-001	Removal of the FMGC
AMM 22-83-34-400-001	Installation of the FMGC
AMM 34-52-00-740-004	BITE Test of the ATC
ASM 345201
AMM 34-52-33-000-001	Removal of the ATC/Mode S Transponder
AMM 34-52-33-400-001	Installation of the ATC/Mode S Transponder

3. Fault Confirmation
Subtask 34-52-00-740-088-A

A. Test
(1) Do the BITE test of the ATC AMM 34-52-00-740-004.

NOTE: Make sure that you entered a flight plan to get a flight number.

4. Fault Isolation
Subtask 34-52-00-810-079-A

A. If the test gives the maintenance message FMGC (1CA1)/ATC1 (1SH1):

(1) If the fault continues:

(a) If the fault continues:

do a check and repair the wiring from the FMGC1 (1CA1) to the ATC/Mode S transponder 1 for the FMGC Flight Identification bus ASM 345201.

Subtask 34-52-00-740-089-A

B. Do the test given in Para. 3.

[Rev.8 from Aug 2018] 2026.04.04 04:33:24 UTC