# SDR DXTA2026061108379

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: June 8, 2026
- Submitted: June 12, 2026
- Operation: Air carrier
- Aircraft: [N502QS](https://openairdocs.org/aircraft/N502QS), registered now
- Make and model: Cessna 680A
- Registry model: [Cessna 680A](https://openairdocs.org/model/cessna-680a) (OpenAirDocs)
- Aircraft serial: 680A0147
- Aircraft time: 8,444 hours, 5,610 cycles
- System (JASC): [2210 · Autopilot System](https://openairdocs.org/jasc/2210)
- Part: Actuator
- Part number: 99141979
- Part serial: 435
- Condition: Defective
- Location: Zone 300
- Stage of operation: DE
- 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/DXTA2026061108379

## Discrepancy

ON DESCENT RECEIVED AMBER CAS AP TRIM STAB FAIL. RAND QRH. ONCE AP DISCONNECTED HAD PUSHING FORCE (NOSE DOWN) ON CONTROLS. MANUAL TRIM WORKED. LANDED. AP SYSTEM MEL APPLIED ALONG WITH MX REQUIREMENTS. YD MEL 22-10-05 WAS REFERENCED AND IS CONSIDERED INOP.  REPLACED HORIZOTNAL STAB TRIM ACTUATOR CONTROLLER, WITH A OVERHAULED UNIT IAW AMM 27-40-30,   REMOVED AND REPLACED NZ120 PCB IAW AMM 24-60-30.  ACFT RETURNED TO ORGINAL CONDITION.  PERFORMED AFCS OPS CHK AND SYS CHKD GOOD WITH NO DEFECTS NOTED.  ALL WORK ACCOMPLISHED IAW AMM 22-10-00 AND 45-40-00.

---
OpenAirDocs.org is an independent research project of [Contrail Labs](https://contraillabs.com/). It is not affiliated with the FAA or the NTSB. Source documents are U.S. government works in the public domain.