Casualties unknown

2007-07-11: Cessna T206H (N97PP) — James E. Bertelsmeyer — Gunnison, CO

Gunnison, CO, US

On July 11, 2007, a Cessna T206H (registration N97PP) operated by James E. Bertelsmeyer was involved in an aviation accident near Gunnison, CO. Investigators recorded the probable cause as: An inadvertent stall during takeoff/initial climb. Contributing factors in this accident were a partial loss of engine power for reasons undetermined, and high density altitude conditions. This summary draws on records from the U.S. National Transportation Safety Board (NTSB) historical archive.

Sourcesthe U.S. National Transportation Safety Board (NTSB) historical archivePrimary reportUpdated 1781061362Data APIEditorial standards

During departure, the pilot rotated at 65-70 KIAS, climbed to 50-75 feet, then experienced a significant power reduction and erratic gyration. The right wing stalled and struck the runway, collapsing the nose wheel. Witnesses reported engine surging and misfire, but post-accident engine examination found no anomalies.

Pilot Report

The pilot reported rotating between 65 and 70 KIAS, flying in ground effect, and then climbing to an altitude of approximately 50 to 75 feet. Subsequently, there was a "significant reduction in power" and the airplane "started gyrating wildly." The "right wing stalled and struck the runway along with the right main wheel." The airplane bounced, collapsing the nose wheel, and skidded to a halt on the side of the runway. The right wing was bent up about four feet inboard on the tip.

Witness Accounts

Six witness statements were received. One witness reported hearing an "unusual noise." Another witness heard the engine "misfire." The lineman who had been on duty on the morning of the accident reported witnessing the entire accident sequence. He stated that full power was developed as the airplane accelerated down the runway. At the 1,000-foot marker, the airplane lifted off and assumed "a very steep angle of attitude" (approximately 15 degrees or greater), and climbed to about 15 to 25 feet above the ground. The engine began surging; he described it as "not rhythmic and did not stop." The pilot leveled off and began a stabilized descent, as if making a forced landing, and then leveled off again. The airplane suddenly dipped to the left and pulled up to a "high angle of attitude." The airplane stalled and broke to the right and nosed into the ground.

Engine Examination

The engine was examined, and no anomalies were noted.

Investigation report by the U.S. National Transportation Safety Board (NTSB) historical archive. Original record: https://carol.ntsb.gov/event/20070820X01210. This page is a structured re-presentation; facts and quotes are in the National Transportation Safety Board (NTSB), United States.