W DOC AIRBUS | TSM A320F

Failure of the ADR ZERO MACH-AOA Pin-Programming

TASK 34-13-81-810-827-A
Failure of the ADR ZERO MACH-AOA Pin-Programming

1. Possible Causes
  • ADIRU-1 [1FP1]
  • ADIRU-2 [1FP2]
  • ADIRU-3 [1FP3]
  • wiring ZERO MACH-AOA pin-programming of the ADIRU-1 (2 or 3)
2. Job Set-up Information
 A. Referenced Information
REFERENCE
DESIGNATION
AMM 34-12-34-000-001
Removal of the ADIRU
AMM 34-12-34-400-001
Installation of the ADIRU
AMM 34-13-00-740-002
INTERFACE TEST of the ADR
3. Fault Confirmation
Subtask 34-13-81-740-082-A
A. Test
   (1) Do the interface test of the ADR 1 (2 or 3) AMM 34-13-00-740-002.
4. Fault Isolation
Subtask 34-13-81-810-076-A
A. If the test gives the maintenance message WRG: ZERO MACH-AOA PIN PROG:
  • remove the ADIRU-1 (2 or 3) AMM 34-12-34-000-001.
  • do a check of pin AA/5H and AA/5J on the rack connector.
  • make sure that there is no ZERO MACH-AOA pin-programming on these pins.
   (1) If the pin-programming is correct:
   (2) If the pin-programming is incorrect:
  • remove the wiring ZERO MACH-AOA pin-programming of the ADIRU-1 (2 or 3) of pin AA/5H and pin AA/5J.
Subtask 34-13-81-740-083-A
B. Do the test given in Para. 3.
[Rev.8 from Aug 2018] 2026.04.04 04:32:35 UTC
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