THE PILOT OF THE DECATHLON STATED THAT SHE HAD WARMED UP THE ENGINE AND WAS ATTACHING THE OVER-THE-SHOULDER STRAP FROM THE REAR ATTACHING POINT. AS SHE PULLED THE STRAP TO FASTEN IT, USING AN UNDERHAND MOTION, THE AIRCRAFT 'LURCHED FORWARD AT FULL THROTTLE'. THE TAIL WHEEL WAS COCKED OFF TO THE RIGHT, SO THE AIRCRAFT WENT TO THE RIGHT AT FULL THROTTLE AND CAUGHT THE REAR OF A PIPER PA-32R'S LEFT WING. THE PILOT SAID THAT THE SHOULDER STRAP HAD CAUGHT ON THE REAR POWER QUADRANT AND ADVANCED IT TO FULL THROTTLE WHEN SHE PULLED ON IT TO FASTEN IT. THE DAY FOLLOWING THE ACCIDENT A STATE AERONAUTICS COMMISSION REPRESENTATIVE ATTEMPTED TO DUPLICATE THE ACCIDENT AS DESCRIBED BY THE PILOT AND WAS UNABLE TO DO SO.
The National Transportation Safety Board determines the probable cause(s) of this accident as follows:
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