# SDR AALA202603067992

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: February 17, 2026
- Submitted: March 6, 2026
- Operation: Air carrier
- Aircraft: [N335PH](https://openairdocs.org/aircraft/N335PH), registered now
- Make and model: Boeing 737823
- Aircraft serial: 31265
- Aircraft time: 24,889 hours, 10,931 cycles
- System (JASC): [3421 · Attitude Gyro and Indicating System](https://openairdocs.org/jasc/3421)
- Part: Adiru
- Part number: HG2050BC02
- Part serial: 56101461
- Condition: Faulty
- Location: Zone 100
- Part time: 24,888 hours, 10,931 cycles
- Stage of operation: CL
- How discovered: O
- Nature of condition: J
- Precautionary procedure: A
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/AALA202603067992

## Discrepancy

AIRCRAFT WAS GROUNDED: AN EMERGENCY WAS NOT DECLARED DUE TO: CAPTAINS PRIMARY FLIGHT DISPLAY (PFD) FLASHED INTERMITTENTLY SHORTLY AFTER TAKEOFF. BOTH AMBER SPEED AND ALTITUDE DISPLAYED ON CAPTAINS PFD. AIRCRAFT AIR INTERRUPTED BACK TO AND LANDED SAFELY AT DEN.   CAPTAIN'S AOA SENSOR FAULTED, R & R LT AOA SENSOR (AALA202602186718), PER AMM 34-21-05. R & R LT PITOT AIR DATA MODULE (AALA202603061844) AND LT STATIC AIR DATA MODULE (AALA202603064269), PER AMM 34-21-04. R & R FLIGHT CONTROL COMPUTER-A (AALA202603068381), PER AMM 22-11-33. R & R NR 1 ADIRU UNIT (AALA202603067992), PER AMM 34-21-01. ALL REQUIRED OPS CHECK AND TESTS ARE GOOD.

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