# SDR ASAA2020071302888

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: July 10, 2020
- Submitted: July 13, 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: 29,638 hours, 9,379 cycles
- System (JASC): [3460 · Flight Management Computing Hardware System](https://openairdocs.org/jasc/3460)
- Part: Fmc
- Condition: Malfunctioned
- Location: Nr 1
- 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/ASAA2020071302888

## Discrepancy

DURING FLIGHT, VTK APPEARED ON CAPTAIN'S PFD AND FMC FUNCTIONALITY WAS LOST. THE SYSTEM APPEARED TO RESOLVE ITSELF BEFORE WE COULD TAKE ANY ACTION. GROUNDED - YES.  NR 1 FMC REQUIRED REBOOT REF. B737-900 FIM 34-61 TASK 837 NORM OPS RESTORED.   NR 1 FMC BITE TEST OK.

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