On July 22, 1987, a Cessna A185F (registration N252W) was involved in an aviation accident near Chandler, AZ. This summary draws on records from the U.S. National Transportation Safety Board (NTSB) historical archive.
During rollout, a tailwheel shimmy led to loss of control. The aircraft veered right, then rolled left, collapsing the left main landing gear. Investigation revealed a bent retention bolt with stripped threads.
Incident Description
During the rollout phase of a flight, the certificated flight instructor (CFI) reported that the tailwheel began to shimmy. The application of forward control yoke pressure temporarily stopped the shimmy. However, as the aircraft slowed, the tailwheel was lowered and the shimmy resumed. The aircraft then veered to the right. The CFI applied left rudder input. Initially, the aircraft continued to the right before it subsequently rolled to the left. During this roll, the left wing was dragged and the left main landing gear collapsed.
Investigation Findings
Post-incident examination of the aircraft revealed that the retention bolt for the left landing gear spring assembly was bent. The bolt exhibited rotational scoring at its mid-point. Additionally, the threads of both the bolt and its associated nut were found stripped.
What happened in the 22 Jul 1987 Cessna A185F accident near Chandler, AZ?
During rollout, a tailwheel shimmy led to loss of control. The aircraft veered right, then rolled left, collapsing the left main landing gear. Investigation revealed a bent retention bolt with stripped threads.
What aircraft was involved and where did it happen?
The accident on 22 Jul 1987 involved a Cessna A185F, registration N252W, at Chandler, AZ.
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