# Incident 20120705014619I: Cessna 750, Wichita, KS, July 5, 2012

- Type: FAA incident report (Accident/Incident Data System), as reported
- Date: July 5, 2012, 18:11 local time
- Place: Wichita, KS
- Airport: Wichita Mid-Continent
- Damage: No damage
- Phase of flight: Cruise/Level Flight
- Operating rules: General operating rules (Part 91)
- Location: 37.6922° N, 97.3375° W: Placed by OpenAirDocs: center of Wichita, KS, within about 7 miles (OpenAirDocs)
- Nearby events: https://openairdocs.org/map.md?lat=37.6922&lon=-97.3375&mi=10
- Aircraft: N87SL (not matched to a registry record)
- Reported make and model: CESSNA 750
- Reported engine: ALLISON AE3007C SER
- People aboard: 0
- Fatal injuries: 0
- Other injuries: 0
- FAA source: FAA Aviation Safety Information Portal (https://asip.faa.gov/)
- Page: https://openairdocs.org/incident/20120705014619I

## Narrative

As the FAA filed it, in capitals; the FAA replaces private details with ^PRIVACY DATA OMITTED^.

WHILE AIRCRAFT WAS IN HIGH ALTITUDE CRUISE FLIGHT AUTOPILOT DISENGAGED MULTIPULE TIMES. MASTER CAUTION ILLUMINATED FOR LOSS OF PRIMARY STAB TRIM. PILOT THEN PROCEEDED TO HAND FLY AIRCRAFT TO ALTERNATE AIRPORT. DURING THE DECENT BOTH PILOTS NOTICED INCREASED CONTROL PRESSURE AND TRIED TO ENGAGE SECONDARY TRIM , THEN RECEIVED MASTER CAUTION FOR FAILURE OF SECONDARY TRIM. WITH NO TRIM SYSTEM AND TRIM STUCK AT APPROXIMATELY          -2.2 THE PILOT DECLARED AN EMERGENCY WITH ATC. AIRCRAFT LANDED WITH NO INCIDENT.THE PRIMARY AND SECONDARY PITCH TRIM WAS TESTED ON THE GROUND DURING POST FLIGHT EVALUATION WITH NO PROBLEMS NOTED. THE TRIM STAB ACUATOR ASSEMBLY WAS REMOVED FOR FURTHER TESTING AND TROUBLESHOOTING BY MANUFACTURER. ACTUATOR ASSEMBLY WAS COOLED TO -65F FOR THREE HOURS AND FOUND TO BE NON-FUNCTIONING. FURTHER TROUBLESHOOTING REVEALED THE ACTUATOR'S ELECTRONIC CONTROL MODULES (ECM) WERE NOT RESPONDING. CESSNA IS CONTINUING TO INVESTIGATE THE ROOT CAUSE.

From the FAA Accident/Incident Data System. Reports are matched to registry aircraft by N-number and event date, checked against the reported make and model; the registry's history has gaps, so older matches can be wrong. Compare the reported make and model. For accidents, the NTSB's own investigation is the fuller record.

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