ASN Wikibase Occurrence # 133525
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| Date: | Thursday 12 June 1997 |
| Time: | 10:00 LT |
| Type: |  WSK PZL Mielec M-18 Dromader |
| Owner/operator: | Leon Jacoby |
| Registration: | N6220C |
| MSN: | 1Z023-01 |
| Total airframe hrs: | 2816 hours |
| Engine model: | Pzl-Kalisz ASZ-621RM18 |
| Fatalities: | Fatalities: 0 / Occupants: 1 |
| Aircraft damage: | Destroyed |
| Category: | Accident |
| Location: | Swifton, AR -
 United States of America
|
| Phase: | Take off |
| Nature: | Agricultural |
| Departure airport: | (NONE) |
| Investigating agency: | NTSB |
| Confidence Rating: |  Accident investigation report completed and information captured |
During takeoff, after the tail wheel came up and before attaining flying speed, the right main landing gear collapsed. Subsequently, the right wheel assembly castored about 90 degrees, causing the aircraft to veer off the side of the runway, and travel about 100 yards through a plowed field. Just prior to coming to rest, the aircraft rolled inverted and a post impact fire consumed the engine compartment and hopper area. Examination of the right main landing gear assembly revealed that the right main landing gear torque link assembly attaching bolt failed. The external surface of the bolt was corroded, and the fracture surface showed evidence of overload failure. There was no evidence of lubrication residues on the bolt and adjacent torque link assembly. According to the aircraft's maintenance manual, the main landing gear torque link assembly attaching bolt should be lubricated every 50 hours. Examination of the maintenance records, did not show any entries made regarding the lubrication of the aforementioned items.
Probable Cause: Main landing gear collapse resulting from a failure of the torque link assembly attaching bolt. A factor was the lack of required maintenance (lubrication of the bolt) which resulted in the bolt becoming dry and corroded.
Accident investigation:
 |
|
Sources:
NTSB FTW97LA216
Location
Revision history:
| Date/time | Contributor | Updates |
|---|---|---|
| 21-Dec-2016 19:26 | ASN Update Bot | Updated [Time, Damage, Category, Investigating agency] |
| 08-Apr-2024 14:58 | ASN Update Bot | Updated [Time, Operator, Other fatalities, Departure airport, Source, Narrative, Category, Accident report] |
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