Aircraft collision with trees during takeoff from private airstrip

Casualties unknown • Tecumseh, OK, US

A single-engine aircraft struck trees shortly after departing a private grass airstrip due to high density altitude and insufficient runway length.

What happened

A pilot with 238 hours of experience attempted to depart a 1,900-foot private grass airstrip in a 125 horsepower single-engine airplane. To utilize a very light headwind, the pilot elected a northerly departure heading, despite being aware of tall trees at the end of the runway. During the takeoff roll, the pilot extended the flaps to the first notch as the aircraft accelerated through 60 mph. The aircraft rotated at 60 mph and appeared to initiate a climb.

Shortly after takeoff, the aircraft encountered sinking air and began to settle into the tall trees located near the departure end of the airstrip. At the time of the accident, the aircraft was at an estimated weight near its maximum takeoff weight of 1,800 pounds. The field elevation was approximately 1,073 feet, but the calculated density altitude was 3,122 feet. Nearby weather observations reported calm winds.

All four occupants—the pilot and three passengers—were not injured and were able to exit the aircraft unassisted. There was no post-crash fire.

Findings

The investigation noted that the 1951-vintage fabric covered airplane was not equipped with a stall warning indicator. The pilot reported no anomalies regarding the engine or flight controls prior to the impact.

Probable cause

The pilot's decision to depart the runway without sufficient distance, compounded by high density altitude and sinking air, led to the aircraft striking trees at the end of the airstrip.

Frequently asked questions

What happened in the 2006-04-17 Piper PA-22 accident near Tecumseh, OK?

A single-engine aircraft struck trees shortly after departing a private grass airstrip due to high density altitude and insufficient runway length.

What aircraft was involved and where did it happen?

The accident on 2006-04-17 involved a Piper PA-22, registration N945A, at Tecumseh, OK.

What was the probable cause of the accident?

The pilot's decision to depart the runway without sufficient distance, compounded by high density altitude and sinking air, led to the aircraft striking trees at the end of the airstrip.

Investigation report by the U.S. National Transportation Safety Board (NTSB) historical archive. Original record: https://carol.ntsb.gov/event/20060516X00579. This page is a structured re-presentation; facts and quotes are in the National Transportation Safety Board (NTSB), United States.

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