# SDR ASAA2022111940851

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: November 19, 2022
- Submitted: November 23, 2022
- Operation: Air carrier
- Aircraft: [N596AS](https://openairdocs.org/aircraft/N596AS), registered now
- Make and model: Boeing 737890
- Aircraft serial: 35688
- Aircraft time: 51,804 hours, 15,439 cycles
- System (JASC): [2210 · Autopilot System](https://openairdocs.org/jasc/2210)
- Part: Control System
- Condition: Faulted
- Location: Vnav
- Stage of operation: NR
- How discovered: O
- Nature of condition: O
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/ASAA2022111940851

## Discrepancy

VNAV WILL NOT ARM. GROUNDED - YES. C/W FIM PROCEDURES - DFCS BITE TEST WITH NO FAULTS FOUND. INTERACTIVE AND SURFACE TESTS CHECK OK. REF B737-800 FIM 22-11 TASK 801.

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