# SDR ASAA2023052643381

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: May 26, 2023
- Submitted: May 30, 2023
- Operation: Air carrier
- Aircraft: [N943AK](https://openairdocs.org/aircraft/N943AK), registered now
- Make and model: Boeing 737-9
- Registry model: [Boeing 737-9](https://openairdocs.org/model/boeing-737-9) (OpenAirDocs)
- Aircraft serial: 44084
- Aircraft time: 2,843 hours, 817 cycles
- System (JASC): [3460 · Flight Management Computing Hardware System](https://openairdocs.org/jasc/3460)
- Part: Unknown
- Part number: UNKNOWN
- Condition: Unknown
- Location: Unknown
- Stage of operation: CR
- 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/ASAA2023052643381

## Discrepancy

INTERMITTENT DUAL FMC FAIL AT FL 390. LASTED ABOUT 60 SEC THEN RECOVERED. GROUNDED - YES. VERIFIED FMC FAILED R/H FMC PRES POS LAT RATE & L/H FMC HAD CDU R RATE BOTH ARE INTERMITTENT. CYCLED BOTH FMC COMP. ACCOMPLISHED SENSOR STATUS TEST BOTH PASS TEST REF B737-9 AMM 34-61-00-710-002.

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