Thursday, May 18, 2017

Cessna P210N Pressurized Centurion , N44C: Accident occurred November 12, 2016 near Pleasanton Municipal Airport (KPEZ), Atascosa County, Texas

The National Transportation Safety Board did not travel to the scene of this accident.

Additional Participating Entity:

Federal Aviation Administration / Flight Standards District Office; San Antonio, Texas

Aviation Accident Final Report - National Transportation Safety Board: https://app.ntsb.gov/pdf 


Investigation Docket - National Transportation Safety Board: https://dms.ntsb.gov/pubdms

Aviation Accident Data Summary - National Transportation Safety Board: https://app.ntsb.gov/pdf

http://registry.faa.gov/N44C

NTSB Identification: CEN17LA039
14 CFR Part 91: General Aviation
Accident occurred Saturday, November 12, 2016 in Pleasanton, TX
Probable Cause Approval Date: 07/20/2017
Aircraft: CESSNA P210N, registration: N44C
Injuries: 1 Serious, 1 Minor.

NTSB investigators may not have traveled in support of this investigation and used data provided by various sources to prepare this aircraft accident report.

The commercial pilot reported that, about 20 minutes into the cross-country flight, the engine suddenly experienced a partial loss of power. The pilot attempted to restore engine power but was not successful. During the subsequent forced landing to a road, the airplane struck a car, resulting in substantial damage to the fuselage and both wings. Examination of the airplane revealed that the hardware that attached the throttle linkage to the engine was not present. Given that the airplane had flown for only a few hours following recent maintenance, it is likely that maintenance personnel did not properly secure the throttle linkage hardware during that maintenance. No other anomalies were noted that would have precluded normal operations.

The National Transportation Safety Board determines the probable cause(s) of this accident as follows:
Maintenance personnel's improper installation of the throttle linkage attachment hardware, which resulted in a partial loss of engine power when the hardware separated in flight.

On November 12, 2016, about 1800 central standard time, a Cessna P210N airplane, N44C, was substantially damaged during the forced landing to a road, one mile from the Pleasanton Municipal Airport (PEZ), Pleasanton, Texas. The commercial pilot sustained serious injuries and the passenger sustained minor injuries. The personal flight was conducted under the provisions of 14 Code of Federal Regulations Part 91. Visual meteorological conditions prevailed and no Federal Aviation Administration (FAA) flight plan had been filed for the flight. The flight departed South Texas Regional Airport at Hondo (HDO) Hondo, Texas, about 1740, and was en route to Mustang Beach Airport (RAS) Port Aransas, Texas. 

According to the pilot, he moved the engine throttle control in 1/8 inch and experienced a partial loss of power. The pilot turned the airplane towards PEZ and went through the emergency checklist during which additional power was lost. In a subsequent conversation, the pilot stated that the engine continued to run without hesitation or roughness; as if it was at idle power. When it was apparent that he was not going to make it to the airport he prepared for a forced landing on the airport road. During the forced landing, the airplane struck a car. There were no ground injuries.

According to the FAA inspector who responded to the accident, the fuselage and both wings were substantially damaged. A post accident examination of the airplane revealed that the hardware that attached the throttle valve lever to the throttle cable rod-end was not present. The hardware was not found at the accident site. The assembly hardware would include a washer, bolt, castellated nut, and cotter pin. No other anomalies were noted that would have precluded normal operations.

According to copies of maintenance records provided by the pilot, an annual inspection was completed on the engine and airframe on June 9, 2016. On September 26, 2016, an overhauled starter adapter was installed. During this maintenance, it would have been necessary for a mechanic to remove the throttle body and linkages to access the starter adapter. Investigators were not able to speak with the maintenance personnel who performed the maintenance.




NTSB Identification: CEN17LA039
14 CFR Part 91: General Aviation
Accident occurred Saturday, November 12, 2016 in Pleasanton, TX
Aircraft: CESSNA P210, registration: N44C
Injuries: 1 Serious, 1 Uninjured.

This is preliminary information, subject to change, and may contain errors. Any errors in this report will be corrected when the final report has been completed. NTSB investigators may not have traveled in support of this investigation and used data provided by various sources to prepare this aircraft accident report.

On November 12, 2016, about 1752 central standard time, a Cessna P210N airplane, N44C, was substantially damaged during the forced landing to a road, one mile from the Pleasanton Municipal Airport (PEZ), Pleasanton, Texas. The commercial pilot sustained serious injury and the passenger was not injured. The personal flight was conducted under the provisions of 14 Code of Federal Regulations Part 91. Visual meteorological conditions prevailed and no Federal Aviation Administration (FAA) flight plan had been filed for the flight. The point of departure and the intended destination are unknown at this time.

According to the FAA inspector who responded to the accident, the pilot reported that he was at 3,200 feet and adjusted the throttle. Manifold pressure was lost and the pilot went through the emergency checklist and prepared for a forced landing on highway 97. After seeing the traffic, the pilot changed course for the airport road. During the forced landing the airplane struck a car. There were no ground injuries. The fuselage and both wings were substantially damaged during the forced landing.

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