# SDR ASAA2017012719571

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: January 27, 2017
- Submitted: January 30, 2017
- Operation: Air carrier
- Aircraft: [N462AS](https://openairdocs.org/aircraft/N462AS), registered now
- Make and model: Boeing 737990ER
- Aircraft serial: 36362
- Aircraft time: 10,985 hours, 3,575 cycles
- System (JASC): [3460 · Flight Management Computing Hardware System](https://openairdocs.org/jasc/3460)
- Part: Warning Flag
- Condition: False Activation
- 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/ASAA2017012719571

## Discrepancy

LEFT MAP DISPLAY SHOWED VTK, LEFT CDU WENT TO MENU PAGE. AFTER 10 SECONDS (APPROX) VTK FLAG WENT AWAY, RE-ENGAGED LNAV VNAV. NO PROBLEMS AFTER. OCCURED JUST PRIOR TO DESCENT.  ACFT GROUNDED.  NO CURRENT FAULTS, IAW AMM 34-61-00.

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