Casualties unknown

Aileron Misrigging Leads to Loss of Control Shortly After Takeoff (N3607N)

Grosse Ile, MI, US

On August 20, 1996, a Piper J3C-65 (registration N3607N) was involved in an aviation accident near Grosse Ile, MI. Investigators recorded the probable cause as: improper attachment of the flight control cables to the ailerons by the mechanic who performed the last annual inspection. A factor relating to this accident was the pilot's failure to perform an adequate check of the flight controls before takeoff. This summary draws on records from the U.S. National Transportation Safety Board (NTSB) historical archive.

Sourcesthe U.S. National Transportation Safety Board (NTSB) historical archivePrimary reportUpdated 2026-06-10Data APIEditorial standards

During the first flight after an annual inspection, the airplane entered an uncontrolled right turn at 30 feet AGL; subsequent examination revealed both ailerons were rigged with cables attached to the wrong side of the bellcranks.

Accident Sequence

Shortly after takeoff, when the airplane had climbed to approximately 30 feet above ground level, it began a right turn. The pilot attempted to correct the deviation but the airplane did not respond to control inputs. In response, the pilot reduced engine power and lowered the aircraft's pitch attitude. Despite these actions, the right wing struck the ground, followed by the right main landing gear. The airplane then ground looped before coming to a complete stop.

Post-Accident Examination

A detailed examination of the airplane following the accident revealed that both ailerons were rigged improperly. Specifically, the aileron control cables had been attached to the wrong side of the bellcranks. This misrigging rendered the aileron controls ineffective for the pilot's intended inputs.

Aircraft History

The flight in which the accident occurred was the first flight of the airplane after it had undergone an annual inspection. That inspection had been performed on July 19, 1996.

Investigation report by the U.S. National Transportation Safety Board (NTSB) historical archive. Original record: https://carol.ntsb.gov/event/20001208X06469. This page is a structured re-presentation; facts and quotes are in the National Transportation Safety Board (NTSB), United States.