ASN Wikibase Occurrence # 295577
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| Date: | Saturday 5 July 2003 |
| Time: | 13:00 LT |
| Type: |  Cessna 182J Skylane |
| Owner/operator: | Private |
| Registration: | N3367F |
| MSN: | 18257367 |
| Year of manufacture: | 1966 |
| Total airframe hrs: | 2300 hours |
| Engine model: | Continental O-470-R |
| Fatalities: | Fatalities: 0 / Occupants: 3 |
| Aircraft damage: | Substantial |
| Category: | Accident |
| Location: | Athol, Idaho -
 United States of America
|
| Phase: | Unknown |
| Nature: | Private |
| Departure airport: | Coeur d'Alene Airport/Pappy Boyington Field, ID (COE/KCOE) |
| Coeur d'Alene Airport/Pappy Boyington Field, ID (COE/KCOE) | |
| Investigating agency: | NTSB |
| Confidence Rating: |  Accident investigation report completed and information captured |
While in cruise flight, the pilot heard a loud clank, and then saw the oil filler door on the nose cowl pop open. Immediately thereafter, the engine lost a significant amount of power, and the windshield began to be covered with a film of oil. The pilot therefore elected to make an emergency landing on a nearby road, and although the initial touchdown was successful, the oil coated windshield made it impossible for the pilot to seeing where he was going. Ultimately the aircraft departed the side of the road and impacted a culvert, whereupon the nose wheel strut collapsed. It was ultimately determined that the number five connecting rod cap bolt failed in overload after its retaining nut backed off to a point where it was retained by only two threads. Further examination of the nut and cotter pin revealed that the cotter pin retaining the rod bolt nut had experienced fatigue crack propagation failure in two location. It was determined that both cracks initiated at locations were the insufficiently torqued connecting rod cap bolt nut had vibrated against the cotter pin surface.
Probable Cause: The failure of one of the number five connecting rod cap bolts during cruise flight due to the associated number five rod cap bolt nut being insufficiently torqued at the last major overhaul. Factors include a culvert alongside the road where the pilot found it necessary to execute his emergency landing and the restriction of the pilot's forward vision due to a film of oil on the windshield.
Accident investigation:
 |
|
Sources:
NTSB SEA03LA129
Revision history:
| Date/time | Contributor | Updates |
|---|---|---|
| 13-Oct-2022 10:08 | ASN Update Bot | Added |
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