# SDR 9JLA2022091539411

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: August 30, 2022
- Submitted: September 15, 2022
- Operation: Air carrier
- Aircraft: [N745K](https://openairdocs.org/aircraft/N745K), registered now
- Make and model: Lear 45LEAR
- Aircraft serial: 45245
- Aircraft time: 5,652 hours, 3,604 cycles
- System (JASC): [2740 · Stabilizer Control System](https://openairdocs.org/jasc/2740)
- Part: Trim System
- Condition: Failed
- Stage of operation: CR
- How discovered: O
- Nature of condition: J
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/9JLA2022091539411

## Discrepancy

THE FLIGHT CREW REPORTED THE PRIMARY PITCH TRIM FAILED ON SHORT FINAL WHEN FULLY CONFIGURED WITH THE AUTO PILOT. THE LANDING WAS UNEVENTFUL. THE MAINTENANCE VENDOR TROUBLESHOT AND FOUND THE TRIM ACTUATOR AND TRIM CONTROL BOX DEFECTIVE. THE PITCH TRIM ACTUATOR WAS REMOVED AND A REPAIRED ACTUATOR INSTALLED AND THE TRIM CONTROL BOX WAS REMOVED WITH A REPAIRED UNIT. OPS CHECKS WERE SATISFACTORY AND THE AIRCRAFT WAS RETURNED TO SERVICE.         TRIM CONTROL BOX REMOVED P/N 6627401000-003 S/N D450 STAB ACTUATOR REMOVED P/N 6627401000-009 S/N B0596

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