- Difficulty date
- September 17, 2013
- Submitted
- September 18, 2013
- Operation
- Air carrier
- Make and model
- Boeing 737724
- Aircraft serial
- 28939
- Aircraft time
- 48,960 hours, 15,681 cycles
- Part
- Adiru
- Part number
- HG2050AC05
- Part serial
- 0480
- Condition
- Failed
- Location
- Nr 1
- Stage of operation
- AP
- How discovered
- O
- Nature of condition
- J
- Precautionary procedure
- O
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AIRSPEED & ALTITUDE UNRELIABLE ANNUNCIATIONS. ENGINE CONTROL ANNUNCIATIONS. TAT & N1 LIMIT INDICATIONS BLANK. 240 KIAS DIFFERENTIAL BETWEEN C/A & FIRST OFFICERS AIRSPEED. INVALID FAULT CODE 34-21038 ON LT ADIRU IAW FIM 34-21 TASK824. REPLACED PSEU LT ADIRU IAW AMM 32-09-10 & AMM 34-21-01. ALL TESTS PASSED.