# SDR DXTA2026060508322

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: June 2, 2026
- Submitted: June 5, 2026
- Operation: Air carrier
- Aircraft: [N540QS](https://openairdocs.org/aircraft/N540QS), registered now
- Make and model: Cessna 680A
- Registry model: [Cessna 680A](https://openairdocs.org/model/cessna-680a) (OpenAirDocs)
- Aircraft serial: 680A0083
- Aircraft time: 8,949 hours, 6,068 cycles
- System (JASC): [5500 · Empennage Structure](https://openairdocs.org/jasc/5500)
- Part: Motor
- Part number: 99141979
- Part serial: 488B
- Condition: Faulted
- Location: Zone 300
- Stage of operation: CL
- How discovered: O
- Nature of condition: J
- Precautionary procedure: A
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/DXTA2026060508322

## Discrepancy

WHEN CLIMBING, WITH THE AUTOPILOT ENGAGED, BETWEEN FL210 AND FL220, THE AMBER STAB TRIM MONITOR MESSAGE POSTED.  WE RAN THE QRH AND MANUALLY USED THE PRIMARY STAB TRIM FOR AIRSPEED CHANGES.  FODM WAS CONTACTED AND A DIVERSION WAS INITIATED. CORRECTIVE ACTION: REPLACED HORIZONTAL STABILIZER TRIM ACTUATOR CONTROLLER DUE TO AMBER STAB TRIM MONITOR CAS MESSAGE. REPLACED WITH OVERHAULED CUSTOMER SUPPLIED CONTROLLER. OPS CHECK GOOD. NO FURTHER DEFECTS IAW AMM 27-40-20.

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