What happened
The incident occurred at Reading Regional Airport in Reading, Pennsylvania, involving a Piper aircraft. At the time of the event, weather conditions were characterized by wind from 310 degrees at 16 knots, with gusts reaching 22 knots. After the engine was started, air traffic control advised N66RA to hold for landing traffic, which consisted of a Lear jet. During this holding period, the reported wind speed increased significantly, with conditions given as 310 degrees at 27 knots.
Once the Lear jet had landed, the Piper was cleared into position and instructed to hold. While crossing the holding line, a sudden gust of wind struck the right wing and tail of the aircraft. This force pushed the Piper onto its nose and right wing. The pilot was unable to recover control of the aircraft, shut down the engine, and evacuated the plane. A few minutes later, another gust of wind pushed the overturned aircraft completely inverted.
The investigation
The primary factor in this accident was the loss of directional control due to environmental conditions. The aircraft was stationary or moving slowly while awaiting takeoff clearance when it encountered wind speeds exceeding normal operational parameters for its weight and configuration. The specific mechanical condition of the aircraft was not cited as a contributing factor, but rather the external force applied by the wind gusts.
Findings
The investigation determined that the accident was caused by strong wind gusts that overwhelmed the aircraft's stability while it was on the ground. The pilot was unable to maintain control against the lateral and vertical forces exerted by the wind, leading to the overturning of the aircraft. No injuries were reported among the occupants who evacuated.
Safety message
Pilots operating light aircraft in conditions with significant wind gusts should be aware of the potential for loss of directional control, especially while taxiing or holding on the runway. Adequate rudder and brake input may not be sufficient to counteract sudden, high-velocity gusts.