# SDR ASAA2016010214604

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: January 2, 2016
- Submitted: January 4, 2016
- Operation: Air carrier
- Aircraft: [N462AS](https://openairdocs.org/aircraft/N462AS), registered now
- Make and model: Boeing 737990ER
- Aircraft serial: 36362
- Aircraft time: 6,647 hours, 2,159 cycles
- System (JASC): [3460 · Flight Management Computing Hardware System](https://openairdocs.org/jasc/3460)
- Part: Fmc
- Part number: 1762000101
- Part serial: 008714
- Condition: Failed
- Location: Left
- Part time: 6,658 hours, 2,164 cycles
- Stage of operation: CR
- 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/ASAA2016010214604

## Discrepancy

AT CRUISE, CAPTAIN'S ND DISPLAY HAD A "VTK", BOTH MCDU'S LOST FMC INFO.  ACCOMPLISHED FMC FAIL QRH FOR LT FMC FAIL.  RT FMC OPERATING NORMAL.  ACFT GROUNDED.  ACCOMPLISHED LT AND RT FMC BITE REF FIM 34-61, TASK 801.  RT FMC NO CURRENT FAULTS.  LT FMC NO CURRENT FAULTS.  ACCOMPLISHED DFCS BITE REF FIM 22-11, TASK 801.  LEFT FMC SHOWS 7 FAULT MESSAGES ON LEG 6.  MESSAGE 22-11071, REF FIM 22-11, TASK 811 FLIGHT MANAGEMENT COMPUTER, FMC-1, PROBLEM - FAULT ISOLATION.  DUE TO HISTORY, R & R FMC-1 REF AMM 34-61-02.

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