Incident
On an unspecified date, two Piper aircraft were holding for takeoff on runway 9 when they collided. The aircraft involved were a Piper PA-181, registration N294PA, and a Piper PA-201, registration N283PA.
Sequence of Events
The student pilot of N294PA reported that he had completed his engine run-up in the designated area and taxied to the holding position for runway 9 at taxiway A-4, stopping behind N283PA. He stated that his usual procedure is to set the parking brake, select 1,000 engine rpm, and switch off the landing light, but he could not recall performing these steps on this occasion. He did remember holding pressure on the toe brakes. While waiting, he turned around to search for a bottle of water in the back seat. At that moment, he removed his feet from the toe brakes, believing the parking brake was engaged. A short time later, still turned around, he heard a loud bang and felt the aircraft shake. Looking forward, he saw that his propeller had struck the tail of N283PA.
The flight instructor in N283PA stated that he and his student had been holding second in line for departure for a few minutes prior to the collision. They felt an impact and the aircraft skidded forward a few feet. He opened the cabin door and observed N294PA behind with its engine stopped and the propeller spinner embedded in the empennage of his aircraft.
Aircraft Damage
The collision resulted in damage to the propeller and spinner of N294PA and to the empennage of N283PA. No further details on injuries or total damage were provided in the source.