# SDR AALA202111016874

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: October 28, 2021
- Submitted: November 1, 2021
- Operation: Air carrier
- Aircraft: [N925NN](https://openairdocs.org/aircraft/N925NN), registered now
- Make and model: Boeing 737*
- Aircraft serial: 31169
- Aircraft time: 25,710 hours, 10,660 cycles
- System (JASC): [2211 · Autopilot Computer](https://openairdocs.org/jasc/2211)
- Part: Computer
- Part number: 8221604102
- Part serial: 4170
- Condition: Failed
- Location: Zone 100 - Fuse
- Part time: 25,705 hours, 10,659 cycles
- Stage of operation: CR
- How discovered: V
- Nature of condition: G
- Precautionary procedure: A
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/AALA202111016874

## Discrepancy

AIRCRAFT WAS NOT GROUNDED: AUTOPILOT A AND B FAILED TO ENGAGE, FLIGHT DECLARED EMERGENCY AND RETURNED TO FIELD. REPLACED FCC-A WITH SERVICEABLE UNIT IAW AMM 22-11-33, OPS CHECK GOOD.

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