# SDR ASAA2023041042807

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: April 10, 2023
- Submitted: April 12, 2023
- Operation: Air carrier
- Aircraft: [N921AK](https://openairdocs.org/aircraft/N921AK), registered now
- Make and model: Boeing 737-9
- Registry model: [Boeing 737-9](https://openairdocs.org/model/boeing-737-9) (OpenAirDocs)
- Aircraft serial: 43337
- Aircraft time: 5,641 hours, 1,625 cycles
- System (JASC): [3400 · Navigation System](https://openairdocs.org/jasc/3400)
- Part: Unknown
- Part number: UNKNOWN
- Condition: Unknown
- Location: Unknown
- Stage of operation: NR
- How discovered: V
- Nature of condition: J
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/ASAA2023041042807

## Discrepancy

MOMENTARY FAILURE OF LEFT FMC. IT RE-ENGAGED ON ITS OWN. GROUNDED - YES. VERIFIED L/H FMC HAD AN INTERMITTENT FAULT AT 2351Z. CYCLED PWR TO A/C ACCOMP. FMC SENSOR TEST ALL SHOW OK REF. B737-9 AMM 34-61-00-710-002.

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