# SDR DXTA200701963

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: February 24, 2007
- Submitted: February 26, 2007
- Operation: Air carrier
- Aircraft: [N990QS](https://openairdocs.org/aircraft/N990QS), registered now
- Make and model: Cessna 750
- Registry model: [Cessna 750](https://openairdocs.org/model/cessna-750) (OpenAirDocs)
- Aircraft serial: 7500190
- Aircraft time: 5,098 hours, 3,007 cycles
- Engine: Allsn AE3007C
- System (JASC): [2210 · Autopilot System](https://openairdocs.org/jasc/2210)
- Part: Warning System
- Condition: Malfunctioned
- Location: Autopilot Sys
- Stage of operation: CR
- How discovered: O
- Nature of condition: N
- Precautionary procedure: A
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/DXTA200701963

## Discrepancy

AFTER ONE HOUR OF CRUISE FLIGHT THE TRIM CLACKER ACTIVATED AND RAN CONTINUOUSLY (AUTO-PILOT WAS NOT TRIMMING) AT LOWER ALTITUDES AND HIGHER TEMPS THE CLACKER SILENCED AND WORKED NORMALLY. C/W AUTOPILOT GROUND FUNCTIONAL CHECKS. SYSTEM OPS CHECKS GOOD ON GROUND IAW 750 MM 22-10-00.

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