# SDR ASAA2015122314463

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: December 23, 2015
- Submitted: December 29, 2015
- Operation: Air carrier
- Aircraft: [N468AS](https://openairdocs.org/aircraft/N468AS), registered now
- Make and model: Boeing 737990ER
- Aircraft serial: 41735
- Aircraft time: 5,819 hours, 1,922 cycles
- System (JASC): [3460 · Flight Management Computing Hardware System](https://openairdocs.org/jasc/3460)
- Part: Warning Light
- Condition: False Activation
- Location: Fmc
- 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/ASAA2015122314463

## Discrepancy

DURING CRUISE AT FL 340, RECEIVED AN FMC P/RST LIGHT ON FWD GLARESHIELD WITH VTK DISPLAYED ON F/O, PILOT FLYING ND FMA DROPPED OUT OF NAV, VNAV PATH TO CONTROL WHEEL STEERING AND NAV DATA DISAPPEARED ON F/O SIDE.  SELECTED "A" AUTOPILOT SINCE CA SIDE OK. NO SCRATCHPAD MESSAGE SO WE LOOKED AT FMC DISAGREE & FMC FAIL CHECKLIST. F/O, RIGHT, FMC APPEARED TO SELF-RECOVER AFTER 30-45 SECONDS.  PRIOR TO ATTEMPTING FMC ON BOTH LT. ACFT GROUNDED.  FMC LOGGED, FMC FAULT IN FLIGHT FAULTS. CDS LOGGED FMC NR 2, DATA INVALID.  ACCOMPLISHED FIM TASK 34-61, TASK-836.  NO HISTORY LAST 30 DAYS.  NO FURTHER ACTION REQUIRED IAW FIM TASK.

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