# SDR DXTA2026010206357

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: December 29, 2025
- Submitted: January 5, 2026
- Operation: Air carrier
- Aircraft: [N616QS](https://openairdocs.org/aircraft/N616QS), registered now
- Make and model: Cessna 680A
- Registry model: [Cessna 680A](https://openairdocs.org/model/cessna-680a) (OpenAirDocs)
- Aircraft serial: 680A0246
- Aircraft time: 5,788 hours, 3,814 cycles
- System (JASC): [2740 · Stabilizer Control System](https://openairdocs.org/jasc/2740)
- Part: Actuator
- Part number: 99141979
- Part serial: 243
- Condition: Faulty
- Location: Pitch Control
- Stage of operation: TO
- How discovered: O
- Nature of condition: J
- Precautionary procedure: C
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/DXTA2026010206357

## Discrepancy

PITCH TRIM JAM DURING TAKE-OFF. PRIMARY PITCH TRIM WOULD NOT ACTUATE NOSE DOWN WHILE BEING PRESSED CONSTANTLY FOR AT LEAST 5-6 SECONDS AFTER TAKE-OFF. A LOUD CLUNK/THUD NOISE WAS HEARD. SECONDARY TRIM WAS SELECTED AND USED TO REGAIN PITCH CONTROL. AN IMMEDIATE EMERGENCY RETURN WAS CONDUCTED. CORRECTIVE ACTION: TROUBLESHOT DOWN TO BAD ACU AND BAD PRIMARY STAB TRIM ACTUATOR. REMOVED ACU AND INSTALLED NEW Ã?CU. WORK DONE IAW AMM 27-40-20. AWAITING ARRIVAL OF NEW ACTUATOR. (CB,CT12/31/2025). RECEIVED MULTIPLE ACTUATORS BAD FROM STOCK AWAITING NEW ACTUATOR ARRIVAL ON 1/3/2026. REMOVED BAD ACTUATOR  AND INSTALLED OVERHAULED ACTUATOR  POST MX CHECKS GOOD. WORK DONE IAW AMM 27-40-05.

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