# SDR DXTA20082899

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: February 25, 2008
- Submitted: March 3, 2008
- Operation: Air carrier
- Aircraft: [N975QS](https://openairdocs.org/aircraft/N975QS), registered now
- Make and model: Cessna 750
- Registry model: [Cessna 750](https://openairdocs.org/model/cessna-750) (OpenAirDocs)
- Aircraft serial: 7500175
- Aircraft time: 6,345 hours, 3,808 cycles
- Engine: Allsn AE3007C
- System (JASC): [2711 · Aileron Tab Control System](https://openairdocs.org/jasc/2711)
- Part: Control Module
- Part number: 4214002111N
- Part serial: 3125
- Condition: Malfunctioned
- Location: Trim System
- Part time: 6,138 hours, 3,789 cycles
- Stage of operation: CR
- 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/DXTA20082899

## Discrepancy

AFTER 15 MINS OF CRUISE FLT AT FL400 (MACH TRIM OFF) AND (PRI STAB TRIM FAIL) MESSAGE KEPT DISPLAYING AND RESETTING.  REMOVED DEFECTIVE ECM P/N 4214-0021-11N S/N 3125, INSTALLED UNIT MODIFIED BY MFG SERVICE, IAW MM CHAP 72-40-00. OPERATIONAL CHECKS GOOD.

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