# SDR DXTA200702524

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: October 4, 2007
- Submitted: October 5, 2007
- Operation: Air carrier
- Aircraft: [N964QS](https://openairdocs.org/aircraft/N964QS), registered now
- Make and model: Cessna 750
- Registry model: [Cessna 750](https://openairdocs.org/model/cessna-750) (OpenAirDocs)
- Aircraft serial: 7500164
- Aircraft time: 4,872 hours, 3,040 cycles
- Engine: Allsn AE3007C
- System (JASC): [2730 · Elevator Control System](https://openairdocs.org/jasc/2730)
- Part: Warning Light
- Condition: Illuminated
- Location: Stab Trim
- 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/DXTA200702524

## Discrepancy

PRIMARY STAB TRIM FAILED CLIMBING THROUGH FL280, NO CAS MESSAGE  PRESENT.  (10-29-07) R & R HORIZ STAB ECM IAW MM 27-40-00. CHECK OK.  PERFORMED VOLTAGE CHECKS ON ECM CONNECTORS PV003 & PV004, VOLTAGES & GROUNDS OK. RECEIVED POWER TO BOTH SEC. & PRIM. ACTUATORS. PERFORMED RESISTANCE CHECKS TO BOTH SEC. & PRIM. CLUTCH & BRAKE ASSY, CHECKS OK. TROUBLESHOOTING FOUND CONNECTORS PV003 & PV004 SWAPPED. CONNECTORS CORRECTED & PROBLEMS MOVED TO SECONDARY STAB & MOVING INTERMITTENTLY. CLEANED & TIGHTENED CONNECTORS, NO HELP. ECM BAD. TROUBLESHOT IAW MM 27-40-00 & CESSNA 750 EXPERT SYS. REMOVED ECM & INSTALLED MODIFIED ECM. PERFORMED PRIMARY CHANNEL A/B TRAVEL CHECKS PER MM TASK 27-40-00-721, NO FAULTS NOTED.

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