# SDR ASAA2018121327437

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: December 13, 2018
- Submitted: December 18, 2018
- Operation: Air carrier
- Aircraft: [N471AS](https://openairdocs.org/aircraft/N471AS), registered now
- Make and model: Boeing 737990ER
- Aircraft serial: 41703
- Aircraft time: 16,861 hours, 5,533 cycles
- System (JASC): [2211 · Autopilot Computer](https://openairdocs.org/jasc/2211)
- Part: Computer
- Part number: 8221604102
- Part serial: 43RHM0
- Condition: Failed
- Location: E&E Bay
- Part time: 16,864 hours, 5,534 cycles
- Stage of operation: NR
- How discovered: O
- Nature of condition: O
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/ASAA2018121327437

## Discrepancy

AUTOPILOT A WILL NOT ENGAGE. AUTOPILOT B DOES ENGAGE. GROUNDED - YES. REMOVED AND REPLACED FCC-AA. OPS TEST GOOD. ALL REQUIRED TESTS PASSED. REF AMM 22-11-33.

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