# SDR AALA202301236279

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: January 19, 2023
- Submitted: January 23, 2023
- Operation: Air carrier
- Aircraft: [N988NN](https://openairdocs.org/aircraft/N988NN), registered now
- Make and model: Boeing 737823
- Aircraft serial: 31237
- Aircraft time: 19,612 hours, 8,247 cycles
- System (JASC): [3418 · Stall Warning System](https://openairdocs.org/jasc/3418)
- Part: Aoa
- Part number: 0861FL1
- Part serial: 18158
- Condition: Faulted
- Location: First Officer'S
- 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/AALA202301236279

## Discrepancy

AIRCRAFT WAS GROUNDED: FIRST OFFICER LOST AIRSPEED AND ALTITUDE, AUTOPILOT DISCONNECTED. CAPTAINÏ¿½S SIDE HAD USABLE AIRSPEED AND ALTITUDE. FLIGHT RETURNED TO MIA LANDING SAFELY. MAINTENANCE ACCOMPLISHED FIM TASK 34-21-00-810-814 DUE MAINTENANCE MESSAGE FOR AOA SIGNAL FAILURE. REPLACED RIGHT AOA SENSOR PER AMM 34-21-05. ACCOMPLISHED SATISFACTORY GROUND TEST.

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