# SDR ASAA2020010931798

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: January 6, 2020
- Submitted: January 10, 2020
- Operation: Air carrier
- Aircraft: [N462AS](https://openairdocs.org/aircraft/N462AS), registered now
- Make and model: Boeing 737990ER
- Aircraft serial: 36361
- Aircraft time: 22,438 hours, 7,301 cycles
- System (JASC): [3460 · Flight Management Computing Hardware System](https://openairdocs.org/jasc/3460)
- Part: Unknown
- Condition: Malfunctioned
- Location: Fmc
- Stage of operation: TX
- How discovered: O
- Nature of condition: J
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/ASAA2020010931798

## Discrepancy

INTERMITTENT VTK FLAG ON CAPTAINS NAV DISPLAY DURING TAXI IN. GROUNDED - YES. VERIFIED CAPT (LH) FMC IS CYCLING ON & OFF WHILE AT THE GATE. CYCLED L/H FMC C/B NO HELP. A/C CHECKED & RELEASED PER MEL 34-36J. UNABLE TO DUP/VERIFY DISCREP. LEFT FMC CURRENTLY WORKS NORMALLY. NO INFLT FAULTS LOGGED LAST 10 FLTS.

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