On March 26, 2003, a Cessna 150G (registration N3964J) was involved in an aviation accident near Medina, OH. Investigators recorded the probable cause as: The pilot's failure to follow published procedures while starting the engine, and his failure to maintain control of the airplane. This summary draws on records from the U.S. National Transportation Safety Board (NTSB) historical archive.
During engine start, an aircraft lunged forward, striking a hangar and two parked airplanes. Post-accident tests showed normal throttle function and brakes capable of holding at full throttle.
Accident Sequence
The pilot completed a preflight inspection of the airplane, boarded, and engaged the starter. The start appeared "normal" until the engine began to "race." The airplane then "lunged" forward, colliding with a hangar and subsequently striking two parked airplanes before coming to a stop.
Post-Accident Examination
Following the accident, an engine run and brake test was performed. During the engine run, the throttle functioned normally. The brakes were able to hold the airplane in place while the engine operated at full throttle.
Checklist Requirements
The aircraft checklist specified that the brakes must be tested and set prior to the pilot starting the engine.