# SDR ASAA2019012827975

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: January 28, 2019
- Submitted: January 30, 2019
- Operation: Air carrier
- Aircraft: [N440AS](https://openairdocs.org/aircraft/N440AS), registered now
- Make and model: Boeing 737990ER
- Aircraft serial: 41705
- Aircraft time: 21,035 hours, 6,938 cycles
- System (JASC): [3460 · Flight Management Computing Hardware System](https://openairdocs.org/jasc/3460)
- Part: Fmc
- Condition: Malfunctioned
- Location: Cockpit
- Stage of operation: CL
- 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/ASAA2019012827975

## Discrepancy

ON CLIMB OUT AT 21,000 DUAL FMC FAILURE WITH VTK AND MAP FLAGS ON CAPTAIN'S SIDE. RESTORED AFTER 1 MINUTE WITHOUT CREW ACTION. GROUNDED - YES. LT FMC SHOWED L-DATE FAULT CAUSED REBOOT IN FLIGHT. REF FIM 34-61 TSK 801 & 829 REBOOTED LT FMC NORM OPS RESTORED & NO CURRENT FAULTS. FMC BITE TEST OK.

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