On July 7, 1991, a Piper PA-28-180 (registration N8498W) operated by Raymond D. Buehrle was involved in an aviation accident near Quincy, IL. Investigators recorded the probable cause as: The pilot's failure to maintain adequate separation between aircraft during a formation flight, which resulted in the third airplane colliding with the lead airplane. This summary draws on records from the U.S. National Transportation Safety Board (NTSB) historical archive; 4 related events involving the same aircraft type or operator are linked below.
During a formation cross-country flight, the third aircraft in the group climbed into the right wing and fuselage of the lead airplane as it attempted to join the formation.
What happened
Four airplanes departed in close succession for a formation cross-country flight. The lead and second aircraft established steady cruise heading, altitude, and speed. As the third airplane approached from behind and below to join the formation, it closed the distance on the leader. Upon reaching the leader's position, the third airplane rose into the right wing and fuselage of the lead aircraft.
The investigation
The investigation focused on the mechanics of the collision during the formation maneuver. Examination confirmed that the third airplane arrived under the lead aircraft and subsequently impacted its right wing and fuselage structure.
Probable cause
The pilot's failure to maintain adequate separation between aircraft during a formation flight, which resulted in the third airplane colliding with the lead airplane.
What happened in the 7 Jul 1991 Piper PA-28-180 accident near Quincy, IL?
During a formation cross-country flight, the third aircraft in the group climbed into the right wing and fuselage of the lead airplane as it attempted to join the formation.
What aircraft was involved and where did it happen?
The accident on 7 Jul 1991 involved a Piper PA-28-180, registration N8498W, operated by Raymond D. Buehrle, at Quincy, IL.
What was the probable cause of the accident?
The pilot's failure to maintain adequate separation between aircraft during a formation flight, which resulted in the third airplane colliding with the lead airplane.
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