Casualties unknown

Nosewheel Bounce Precedes Collision with Parked Aircraft During Taxi (N720MB)

Fond DU Lac, WI, US

On August 2, 1997, a Piper PA-24-250 (registration N720MB) was involved in an aviation accident near Fond DU Lac, WI. Investigators recorded the probable cause as: the pilot's improper use of the throttle control friction lock, and his inadequate remedial action. Related factors were his lack of experience in type of aircraft, the pilot's habit interference, and the presence of parked (standing) aircraft. 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

A pilot lost control after a nosewheel bounce during taxi, leading to a collision with five stationary aircraft. Subsequent inspection confirmed normal operation of throttle and brakes.

Accident Narrative

The accident occurred during taxi before takeoff. The pilot applied heavy throttle to move the airplane from its parking position up an incline to reach a taxiway. Upon reaching the top of the incline, the nosewheel bounced, and the pilot lost directional control. The airplane continued moving and impacted five stationary airplanes before coming to a stop.

Post-Accident Inspection

Following the accident, the throttle, brakes, magneto switch, and mixture controls were examined. All components were found to operate normally. The throttle was a vernier type, and the brakes were of the hand brake type. These control types were noted as different from those the pilot had previously used.

Pilot Experience

The pilot had accumulated 16 hours of total flight time in the accident airplane, including approximately 6 hours of solo flight. Prior to operating this aircraft, the pilot had flown airplanes equipped with a friction lock type throttle and toe brakes.

Investigation report by the U.S. National Transportation Safety Board (NTSB) historical archive. Original record: https://carol.ntsb.gov/event/20001208X08575. This page is a structured re-presentation; facts and quotes are in the National Transportation Safety Board (NTSB), United States.