On August 29, 1993, a Piper PA-24-260 (registration N9249P) was involved in an aviation accident near Factoryville, PA. Investigators recorded the probable cause as: THE PILOT'S INADEQUATE PREFLIGHT PREPARATION BY FAILING TO PROPERLY SET THE STABILATOR TRIM TAB. This summary draws on records from the U.S. National Transportation Safety Board (NTSB) historical archive.
During takeoff from a 2500-foot runway, the pilot rotated at 75 mph. After flap retraction, the nose rose uncontrollably despite inputs; the right wing dropped and struck trees. Post-accident examination revealed the stabilator trim was in the full nose-up position.
Accident Sequence
According to the official investigation report, the pilot initiated the takeoff roll on a runway measuring 2500 feet in length. At approximately midfield, the airplane was rotated at a speed of 75 miles per hour (mph). Following the rotation, the flaps were retracted. Subsequently, the nose of the airplane continued to rise despite the pilot's efforts to lower it. The right wing then dropped, and the airplane struck some trees. The sequence of events indicates a loss of control shortly after takeoff.
Examination Findings
A thorough examination of the wreckage was conducted to determine the probable cause of the accident. It was discovered that the stabilator trim tab and the associated indicator were in the full nose-up position after the accident. Further inspection of the flight controls and the stabilator trim system revealed no mechanical discrepancies or malfunctions. The absence of any anomalies in the control system suggests that the trim setting may have been a contributing factor, although the report does not explicitly state a cause.
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