# SDR AALA202008309008

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: August 24, 2020
- Submitted: August 30, 2020
- Operation: Air carrier
- Aircraft: [N916AN](https://openairdocs.org/aircraft/N916AN), registered now
- Make and model: Boeing 737823
- Aircraft serial: 29517
- Aircraft time: 61,912 hours, 25,177 cycles
- System (JASC): [2211 · Autopilot Computer](https://openairdocs.org/jasc/2211)
- Part: Computer
- Condition: Defective
- Location: Autopilot
- Stage of operation: NR
- How discovered: 9
- Nature of condition: O
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/AALA202008309008

## Discrepancy

AIRCRAFT WAS GROUNDED: DURING A FUNCTIONAL CHECK FLIGHT; AUTOPILOT ENGAGEMENT BOTH CMD A AND CMD B HAD A PRONOUNCED AILERON DISPLACEMENT TO THE LEFT.  CMD B ENGAGEMENT WAS SIGNIFICANTLY WORSE THAN CMD A.. REPLACED FLIGHT CONTROL COMPUTER B PER AMM 22-11-33-401.

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