# SDR AALA2019061089001

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: June 7, 2019
- Submitted: June 19, 2019
- Operation: Air carrier
- Aircraft: [N172AJ](https://openairdocs.org/aircraft/N172AJ), registered now
- Make and model: Boeing 757223
- Aircraft serial: 32400
- Aircraft time: 55,576 hours, 15,790 cycles
- System (JASC): [2210 · Autopilot System](https://openairdocs.org/jasc/2210)
- Part: Computer
- Part number: 6228757106
- Part serial: 3049
- Condition: Failed
- Location: Autopilot
- Stage of operation: CR
- 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/AALA2019061089001

## Discrepancy

AIRCRAFT WAS GROUNDED: PILOT REPORTS CENTER AUTOPILOT KICKED OFF 2 HOURS AT CRUISE. RESET 50 MINUTES LATER AND CLEARED NO LAND 3 ANNUNCIATOR. CENTER AUTOPILOT RESET OK. IN DESCENT CENTER AUTOPILOT UNCOMMANDED TURN TO RIGHT AND DISENGAGED. NO LAND 3 ILLUMINATED. USED LEFT AUTPILOT NO PROBLEM.   MAINTENANCE ACCOMPLISHED FIM 22-02-00-810-801. CTR FCC FAILED. REMOVED & REPLACED CTR FCC IAW AMM 22-11-01. PERFORMED GROUND TEST LAND 40 IAW AMM 22-00-02. ALL OPS CHECK OK.

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