ASN Wikibase Occurrence # 200588
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Narrative:The commercial pilot reported that, after an uneventful touchdown on the dry, gravel-surface runway, he felt a medium vibration as he applied the brakes. As the airplane continued the landing roll, both main landing gear (MLG) legs sheared off. The propeller impacted the runway, and the airplane came to rest on the bottom of the fuselage, which sustained substantial damage.
Helio H-250 Courier
|Fatalities:||Fatalities: 0 / Occupants: 1|
|Aircraft damage:|| Substantial|
|Location:||Anchorage, AK -
United States of America
|Departure airport:||Igiugig, AK (None)|
|Destination airport:||Anchorage, AK (LHD)|
|Investigating agency: ||NTSB|
|Confidence Rating:|| Accident investigation report completed and information captured|
A postaccident examination of the airplane revealed that both MLG legs failed due to fatigue cracking. The fatigue cracks were extended by intermittent overstress until the legs separated. The overstress extensions likely occurred during the accident landing or immediately before it because there was no corrosion of the crack surfaces.
Probable Cause: The fatigue fracture failure of both main landing gear (MLG) legs during the landing roll, which resulted in the collapse and separation of both MLG legs.
| || |
|Investigating agency: ||NTSB |
|Status: ||Investigation completed|
|Download report: || Final report|
Other occurrences involving this aircraft
||ASN Update Bot
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