# SDR 9JLA2023012039200

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: January 7, 2023
- Submitted: January 20, 2023
- Operation: Air carrier
- Aircraft: [N346HG](https://openairdocs.org/aircraft/N346HG), registered now
- Make and model: Beech 400A
- Registry model: [Beech 400A](https://openairdocs.org/model/hawker-beechcraft-400a) (OpenAirDocs)
- Aircraft serial: RK346
- Aircraft time: 11,067 hours, 9,100 cycles
- System (JASC): [2210 · Autopilot System](https://openairdocs.org/jasc/2210)
- Part: Computer
- Part number: 8221019313
- Part serial: 4AHY
- Condition: Defective
- Location: Fcc
- Stage of operation: CR
- How discovered: O
- Nature of condition: J
- Precautionary procedure: H
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/9JLA2023012039200

## Discrepancy

THE FLIGHT CREW REPORTED THAT THE AUTO-PILOT PITCH TRIM FAILED DURING FLIGHT. THE SYSTEM WAS DEACTIVATED AND PLACED ON MEL 22-10-01-05 FOR CONTINUED OPERATIONS. THE MAINTENANCE TEAM DETERMINED THE NO2 FLIGHT COMPUTER WAS DEFECTIVE AND WAS REMOVED AND REPLACED WITH AN OVERHAULED UNIT. OPERATIONAL CHECKS WERE SATISFACTORY, AND THE AIRCRAFT WAS RETURNED TO SERVICE.

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