# SDR AALA202210274317

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: October 25, 2022
- Submitted: October 27, 2022
- Operation: Air carrier
- Aircraft: [N895NN](https://openairdocs.org/aircraft/N895NN), registered now
- Make and model: Boeing 737
- Aircraft serial: 31149
- Aircraft time: 30,339 hours, 12,842 cycles
- System (JASC): [2200 · Auto Flight System](https://openairdocs.org/jasc/2200)
- Part: Computer
- Part number: 8221604101
- Part serial: 17R362
- Condition: Faulty
- Location: Zone 100 - Fuse
- Part time: 30,339 hours, 12,843 cycles
- Stage of operation: CL
- How discovered: V
- Nature of condition: O
- Precautionary procedure: A
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/AALA202210274317

## Discrepancy

AIRCRAFT WAS GROUNDED: AFTER TAKEOFF FROM MIAMI LOST BOTH FLIGHT DIRECTORS. THEY CAME BACK WHEN LNAV RE-ENGAGED. WHEN ATTEMPTING APPROACH TO BOSTON, BOTH FLIGHT DIRECTORS FAILED. FLIGHT DIVERTED TO PVG, LANDING SAFELY. REPLACED FLIGHT CONTROL COMPUTER A PER AMM 22-11-33 O. ACCOMPLISHED SATISFACTORY OPERATIONAL CHECKS.

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