# SDR AALA202001219020

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: January 19, 2020
- Submitted: January 21, 2020
- Operation: Air carrier
- Aircraft: [N964NN](https://openairdocs.org/aircraft/N964NN), registered now
- Make and model: Boeing 737823
- Aircraft serial: 31210
- Aircraft time: 16,401 hours, 6,301 cycles
- System (JASC): [3460 · Flight Management Computing Hardware System](https://openairdocs.org/jasc/3460)
- Part: Fmc
- Part number: COM5117
- Part serial: 000154
- Condition: Faulted
- Location: Left
- Stage of operation: NR
- How discovered: O
- Nature of condition: G
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/AALA202001219020

## Discrepancy

AIRCRAFT WAS GROUNDED: FMC FAIL INFLIGHT. 1ST L FAILED AND BOTH CDUS - NO FMC. PUT ON )'2 AUTO PILOT RESTORED L NAV/V  NAV THEN B FAILED AND L CAME BACK WITH CDUS. RESTORED AP1 AND L NAV/VMAV AND AFTER A FEW  MINUTES FMC 2 RESTORED. REMOVED AND REPLACED FMCS IAW AMM 34-61-02. AND ACCOMPLISHED SOFTWARE UPLOADS IAW MCM 08T210034001.FMC OPS TEST NORMAL IAW AMM 34-61-00. ALSO SEE: AALA202001219001.

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