# SDR ASAA201911151337

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: November 13, 2019
- Submitted: November 16, 2019
- Operation: Air carrier
- Aircraft: [N471AS](https://openairdocs.org/aircraft/N471AS), registered now
- Make and model: Boeing 737990ER
- Aircraft serial: 41703
- Aircraft time: 20,310 hours, 6,536 cycles
- System (JASC): [3460 · Flight Management Computing Hardware System](https://openairdocs.org/jasc/3460)
- Part: Fmc
- Condition: Malfunctioned
- Stage of operation: NR
- How discovered: O
- Nature of condition: J
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/ASAA201911151337

## Discrepancy

MOMENTARY LOSS OF BOTH FMC FAIL ON BOTH CAPTAIN AND FIRST OFFICER SIDE. SYSTEM RESTORED ITSELF BEFORE QRH PORCEDURE WAS STARTED. GROUNDED - YES. DEU 1 & 2 LOGGED NO FMC 1 DATA, ONE FLIGHT COMPLETED FIM TASK 31-63 TASK 809 NO INPUT FROM LRU ON 429 BUSS DEU 1&2 NO CURRENT FAULTS. NO1 FMC OPS NORMAL PER B737-900 AMM 34-61-00.

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