# SDR ASAA2019102853126

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: October 25, 2019
- Submitted: October 28, 2019
- Operation: Air carrier
- Aircraft: [N533AS](https://openairdocs.org/aircraft/N533AS), registered now
- Make and model: Boeing 737890
- Aircraft serial: 35201
- Aircraft time: 34,539 hours, 10,041 cycles
- System (JASC): [3460 · Flight Management Computing Hardware System](https://openairdocs.org/jasc/3460)
- Part: Fmc
- Condition: Malfunctioned
- 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/ASAA2019102853126

## Discrepancy

DURING CRUISE AT FL360, ENCOUNTERED A SINGLE FMC FAILURE. "SINGLE FMC OPERATION" IN THE SCRATCHPAD, ACCOMPANIED BY "VTK" ON THE FIRST OFFICERS NAVIGATION DISPLAY AND FOLLOWED BY A "MAP" FLAG. RAN QRH AND CONTINUED FO RHTE REMAINDER OF THE FLIGHT WITH FMC SOURCE SELECTOR BOTH ON L. GROUNDED - YES. RETURNED FMC SELECTOR SWITCH TO NORMAL . PERFORMED LEFT AND RIGHT FMC BITE CHECK REF B737-800 FIM 34-61 TASK 801 OPS CHECK NORMAL.

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