# SDR ASAA2022022337543

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: February 23, 2022
- Submitted: February 25, 2022
- Operation: Air carrier
- Aircraft: [N924AK](https://openairdocs.org/aircraft/N924AK), registered now
- Make and model: Boeing 737-9
- Registry model: [Boeing 737-9](https://openairdocs.org/model/boeing-737-9) (OpenAirDocs)
- Aircraft serial: 43333
- Aircraft time: 959 hours, 257 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: O
- Nature of condition: O
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/ASAA2022022337543

## Discrepancy

DUAL FMC FAILURE ENROUTE (NOT ASSOCIATED W/LOADING ARCH PRIOR TO DESCENT WIND UPLINK). RESET ON ITS OWN AFTER APPROX 30 SECONDS. INDICATIONS: "VTK" ON CA ND, BOTH FMCDU FAIL, LOSS OF LNAV & VNAV. MAP INFORMATION REMAINED ON BOTH ND. GROUNDED - YES. NO CURRENT FAULTS. PERFORMED LEFT AND RIGHT OPS TEST PER B737-9 AMM 34-61-00-710-801 NO DEFECTS NOTED.

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