On August 9, 1997, a Cessna 185 (registration N5246E) was involved in an aviation accident near Chickaloon, AK. No fatalities were reported. Investigators recorded the probable cause as: Multiple fatigue cracks originating from the wheel attachment bolt holes led to the separation of the left main landing gear leg. This summary draws on records from the U.S. National Transportation Safety Board (NTSB) historical archive.
During landing roll on a gravel strip, the left main landing gear leg separated at the bolt holes, causing a ground loop and wingtip damage. Metallurgical examination revealed fatigue cracks originating from the bolt holes.
Incident Overview
A tundra tire-equipped airplane experienced a landing gear failure during the landing roll on a gravel strip. As the aircraft slowed to 25 knots, the left main landing gear leg separated at the wheel attachment bolt holes. The airplane subsequently ground looped, resulting in damage to both wingtips.
Examination Findings
A metallurgical examination of the failed gear leg revealed multiple fatigue cracks that had originated from the bolt holes. These cracks were present at the points where the leg separated.
Aircraft Usage and Inspection History
The airplane had been used extensively for off-airport landings, both on wheels and on skis. The failed gear leg had been inspected for cracks approximately 806 flight hours and 16 months prior to the accident.
Probable cause
Multiple fatigue cracks originating from the wheel attachment bolt holes led to the separation of the left main landing gear leg.
What happened in the 9 Aug 1997 Cessna 185 accident near Chickaloon, AK?
During landing roll on a gravel strip, the left main landing gear leg separated at the bolt holes, causing a ground loop and wingtip damage. Metallurgical examination revealed fatigue cracks originating from the bolt holes.
Were there any fatalities in the 9 Aug 1997 Cessna 185 accident?
No fatalities were recorded in this accident.
What aircraft was involved and where did it happen?
The accident on 9 Aug 1997 involved a Cessna 185, registration N5246E, at Chickaloon, AK.
What was the probable cause of the accident?
Multiple fatigue cracks originating from the wheel attachment bolt holes led to the separation of the left main landing gear leg.
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