ASN Wikibase Occurrence # 199059
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| Date: | Tuesday 19 July 2016 |
| Time: | 10:30 |
| Type: |  Cessna A185 |
| Owner/operator: | Private |
| Registration: | N85CF |
| MSN: | 18501904 |
| Year of manufacture: | 1971 |
| Engine model: | Continental IO-520D |
| Fatalities: | Fatalities: 0 / Occupants: 4 |
| Aircraft damage: | Substantial |
| Category: | Accident |
| Location: | Illiamna, AK -
 United States of America
|
| Phase: | Landing |
| Nature: | Executive |
| Departure airport: | Iliamna, AK (PAIL) |
| Iliamna, AK | |
| Investigating agency: | NTSB |
| Confidence Rating: |  Accident investigation report completed and information captured |
The commercial pilot reported that he made a normal approach and landing to an unimproved landing strip and that the left main landing gear (MLG) wheel assembly separated from the landing gear leg at the axle bolts during rollout. The gear leg then dug into the gravel landing surface, which resulted in a sudden left turn, ground loop, and subsequent substantial damage to the left wing, left aileron, and elevator. The pilot and the passenger stated that it did not feel as if the airplane hit anything during the landing rollout. The pilot also stated that the initiating event may have been a crosswind landing on a hard-surfaced runway with large tundra tires earlier in the week, during which he inadvertently “put a side load on the landing gear.”
Postaccident examination of the left MLG axle assembly and bolts revealed that the left axle had separated from the landing gear leg due to a rearward overload event. The initial separation was due to the shearing of the forward bolt threads by tensile forces on the bolts, which was followed by the bending deformation of the aft bolts, consistent with a fore-to-aft overload.
Probable Cause: The overstress fracture of the left main landing (MLG) gear axle attachment bolts and the subsequent separation of the left MLG wheel, which resulted in the pilot’s inability to control the airplane.
Accident investigation:
 |
|
Sources:
NTSB
History of this aircraft
Other occurrences involving this aircraft
| 19 June 1998 | N85CF | Private | 0 | Anchorage, AK | |
sub |
Location
Revision history:
| Date/time | Contributor | Updates |
|---|---|---|
| 19-Aug-2017 16:47 | ASN Update Bot | Added |
Corrections or additions? ... Edit this accident description
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