ASN Aircraft accident Cessna 550 Citation II N492AT Butler County/K. W. Scholter Field Airport, PA (BTP)
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Status:Accident investigation report completed and information captured
Date:Wednesday 24 January 2007
Type:Silhouette image of generic C550 model; specific model in this crash may look slightly different
Cessna 550 Citation II
Operator:Air Trek
Registration: N492AT
MSN: 550-0472
First flight: 1983
Total airframe hrs:10730
Engines: 2 Pratt & Whitney Canada JT15D-4
Crew:Fatalities: 0 / Occupants: 2
Passengers:Fatalities: 0 / Occupants: 2
Total:Fatalities: 0 / Occupants: 4
Aircraft damage: Damaged beyond repair
Location:Butler County/K. W. Scholter Field Airport, PA (BTP) (   United States of America)
Phase: Landing (LDG)
Departure airport:Winchester Municipal Airport, VA (WGO/KOKV), United States of America
Destination airport:Butler County/K. W. Scholter Field Airport, PA (BTP/KBTP), United States of America
The purpose of the flight was to pick up a patient at Butler County (BTP) for a subsequent air ambulance transportation flight. The airplane was being flown by the copilot, who was seated in the left seat. At 08:59, the airplane was cleared for the ILS approach to runway 08, a 4,801 foot-long, 100 foot-wide, grooved, asphalt runway. The airplane was being manually flown by the copilot; who stated that the landing approach speed was 106 knots. She recalled being "a little fast" on the approach; however, she reduced the engine power to slow down. An eyewitness stated that the airplane appeared "high and fast" as it crossed over the runway threshold. The airplane touched down about halfway down the runway, and continued off the departure end. It then struck a wooden localizer antenna platform, and the airport perimeter fence, before crossing a road, and coming to rest about 400 feet from the end of the runway.
The airport manager estimated that braking action was "fair" at the time of the accident, with about 1/4 to 1/2 of loose, "fluffy" snow on the runway.

Probable Cause:

PROBABLE CAUSE: "The copilot's failure to maintain the proper airspeed, and failure to obtain the proper touchdown point, and the pilot-in-command's inadequate supervision, which resulted in an overrun. Contributing to the accident was the PIC's failure to activate the speed brake upon touchdown and the snow contaminated runway."

Accident investigation:

Investigating agency: NTSB
Status: Investigation completed
Duration: 1 year and 3 months
Accident number: NYC07FA058
Download report: Summary report

Runway excursion



photo of Cessna-550-Citation-II-N492AT
accident date: 24-01-2007
type: Cessna 550 Citation II
registration: N492AT

This map shows the airport of departure and the intended destination of the flight. The line between the airports does not display the exact flight path.
Distance from Winchester Municipal Airport, VA to Butler County/K. W. Scholter Field Airport, PA as the crow flies is 236 km (148 miles).
Accident location: Exact; deduced from official accident report.

This information is not presented as the Flight Safety Foundation or the Aviation Safety Network’s opinion as to the cause of the accident. It is preliminary and is based on the facts as they are known at this time.
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