# SDR ASAA2017042920563

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: April 29, 2017
- Submitted: May 1, 2017
- Operation: Air carrier
- Aircraft: [N577AS](https://openairdocs.org/aircraft/N577AS), registered now
- Make and model: Boeing 737890
- Aircraft serial: 35186
- Aircraft time: 38,537 hours, 11,456 cycles
- System (JASC): [3460 · Flight Management Computing Hardware System](https://openairdocs.org/jasc/3460)
- Part: Warning Message
- Condition: False Activation
- Location: Fmc
- Stage of operation: CR
- How discovered: O
- Nature of condition: N
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/ASAA2017042920563

## Discrepancy

AT CRUISE ALTITUDE, BOTH FMCS FAILED WITH VTK INDICATED ON BOTH NAV DISPLAYS AFTER 10 SECONDES IT RECOVERED AND ALL INDICATIONS WERE NORMAL.  ACFT GROUNDED. PERFORMED FIM TASK 34-61-836. NO DEFECTS NOTED. NO DEFECTS FOR PAST 60 DAYS.

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