# SDR ASAA2021031334289

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: March 13, 2021
- Submitted: March 16, 2021
- Operation: Air carrier
- Aircraft: [N459AS](https://openairdocs.org/aircraft/N459AS), registered now
- Make and model: Boeing 737990ER
- Aircraft serial: 36352
- Aircraft time: 26,272 hours, 8,432 cycles
- System (JASC): [3460 · Flight Management Computing Hardware System](https://openairdocs.org/jasc/3460)
- Part: Fmc
- Condition: Faulted
- Location: Right
- 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/ASAA2021031334289

## Discrepancy

AT FL350 RIGHT FMC VTK DISPLAYED ON RIGHT NAV DISPLAY. LNAV DISCONNECT. TRANSFERRED AUTOPILOT TO A AUTOPILOT. AFTER 3 MINUTES, FMC RECOVERED TO NORMAL. GROUNDED - YES. T/S PER B737-900 FIM 34-61 TASK 836. BOTH FMC'S CK'D GOOD, FMC SELECTION APPEARS ON BOTH MCDU'S.

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