Loss of the TAT 1 Data on the ADR 1

TASK 34-11-00-810-909-A
Loss of the TAT 1 Data on the ADR 1

1. Possible Causes

2. Job Set-up Information
A. Referenced Information

REFERENCE	DESIGNATION
ASM 341102
AMM 34-11-18-000-001	Removal of the TAT Sensor
AMM 34-11-18-400-001	Installation of the TAT Sensor
AMM 34-12-34-000-001	Removal of the ADIRU
AMM 34-12-34-400-001	Installation of the ADIRU
AMM 34-13-00-740-003	SYSTEM TEST of the ADR

3. Fault Confirmation
Subtask 34-11-00-740-149-A ** ON A/C NOT FOR ALL

A. Test
Do the system test of the ADR 1 AMM 34-13-00-740-003.

4. Fault Isolation
Subtask 34-11-00-810-252-A ** ON A/C NOT FOR ALL

A. If the test gives the maintenance message TAT SENSOR (11FP1)/ADIRU1 (1FP1):

(1) If the fault continues:

(a) If the fault continues:

remove the ADIRU1
disconnect the electrical connector of the TAT sensor 1
do a check and repair the wiring between the TAT sensor 1 and the ADIRU1 : pins A/J, E and pins AA/8H, 8J ASM 341102
install the ADIRU1
connect the electrical connector of the TAT sensor 1.

[Rev.8 from Aug 2018] 2026.04.04 04:32:19 UTC