ASN Wikibase Occurrence # 290758
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| Date: | Saturday 24 October 2015 |
| Time: | 15:00 LT |
| Type: |  Cessna 120 |
| Owner/operator: | |
| Registration: | N3124N |
| MSN: | 13382 |
| Year of manufacture: | 1947 |
| Total airframe hrs: | 4162 hours |
| Engine model: | Continental C85 SERIES |
| Fatalities: | Fatalities: 0 / Occupants: 1 |
| Aircraft damage: | Substantial |
| Category: | Accident |
| Location: | Lone Pine, California -
 United States of America
|
| Phase: | Take off |
| Nature: | Private |
| Departure airport: | Lone Pine, CA (O26) |
| Tehachapi-Kern County Airport, CA (TSP/KTSP) | |
| Investigating agency: | NTSB |
| Confidence Rating: |  Accident investigation report completed and information captured |
The private pilot was taking off from a dirt airstrip for a personal cross-country flight. He reported that, during the takeoff roll, it felt like the left main landing gear had hit soft soil and that the drag had increased. He attempted to correct for the condition, but the left MLG wheel continued to drag. The airplane then suddenly nosed over, which resulted in substantial damage to the wings and empennage.
Postaccident examination of the airplane revealed that the left MLG wheel axle was fractured, which resulted in the separation of the left MLG wheel. A detailed examination of the fracture surface identified a fatigue fracture that emanated from the outer surface of a circumferential weld between the lateral tube portion and the vertical plate portion of the axle. The investigation could not determine what event initiated the fatigue cracking; however, the origin areas were covered in zinc-chromate primer, which indicates that the axle was painted when the circumferential weld contained a preexisting crack.
Probable Cause: The fracture of the left main landing gear (MLG) wheel axle due to fatigue, which resulted in the separation of the left MLG wheel during takeoff from a dirt airstrip.
Accident investigation:
 |
|
Sources:
NTSB WPR16LA018
Location
Revision history:
| Date/time | Contributor | Updates |
|---|---|---|
| 06-Oct-2022 19:14 | ASN Update Bot | Added |
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