# SDR ASAA2020091083156

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: September 8, 2020
- Submitted: September 11, 2020
- Operation: Air carrier
- Aircraft: [N407AS](https://openairdocs.org/aircraft/N407AS), registered now
- Make and model: Boeing 737-900ER
- Registry model: [Boeing 737-900ER](https://openairdocs.org/model/boeing-737-900er) (OpenAirDocs)
- Aircraft serial: 41731
- Aircraft time: 30,119 hours, 9,514 cycles
- System (JASC): [3460 · Flight Management Computing Hardware System](https://openairdocs.org/jasc/3460)
- Part: Fmc
- Condition: Malfunctioned
- Location: Captain'S
- 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/ASAA2020091083156

## Discrepancy

'VTK' ANNUNCIATION ON CAPTAIN'S MAP DISPLAY 3 TIMES DURING CRUISE FLIGHT AT FL380.  'VTK' EXTINGUISHED AFTER 15-20 SECONDS.  GROUNDED - YES.  FMC L SHOWS PGM FAULT ON LAST FLIGHT LEG.  B737-900 FIM 34-61 TASK 807: ONLY THIS FAULT SHOWS.  FMC BITE AND ADIRU BITE SHOWS NO FAULTS, REF B737-900 FIM 34-61 TASK 801 AND 34-61 TASK 824.  NO HISTORY PAST 30 DAYS.

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