ASN Wikibase Occurrence # 39006
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| Date: | Friday 30 June 2000 |
| Time: | 07:05 |
| Type: |  Weatherly 201C |
| Owner/operator: | Private |
| Registration: | N9228W |
| MSN: | 1036 |
| Total airframe hrs: | 5400 hours |
| Engine model: | P&W R985AN14B |
| Fatalities: | Fatalities: 1 / Occupants: 1 |
| Aircraft damage: | Destroyed |
| Category: | Accident |
| Location: | Tolna, ND -
 United States of America
|
| Phase: | Manoeuvring (airshow, firefighting, ag.ops.) |
| Nature: | Agricultural |
| Departure airport: | 19ND |
| Investigating agency: | NTSB |
| Confidence Rating: |  Accident investigation report completed and information captured |
The airplane was destroyed by impact with terrain while maneuvering. The right wing was found detached and was found on the township road. A post crash fire occurred in the fuselage and left wing. The North Dakota Highway Patrol report stated, "The wing came off the plane and the plane then crashed approx. 396' west of the township road in a field of flax. The plane came to rest and was burning approx 471' west of the township road." The pilot sustained fatal injuries. The annual inspection was completed on May 1, 2000. The airplane had 343 hours since its last annual inspection and "5,400 " hours total time. Sections of the separated right wing and its mating surface were cut away and shipped to the NTSB's Materials Laboratory for detailed examination. Crack arrest lines and striations were found in the fracture area. Corrosion was observed on portions of the spar cap fracture surface. Circumferential grooves were observed. The upper and lower sides of the spar cap hole and adjacent fracture surfaces using scanning electron microscopy indicate fatigue origins initiating from corrosion pits on the hole surface. Subsequent to the accident the manufacturer issued a mandatory service bulletin to inspect the spar for cracks before the next flight and subsequent inspections accomplished at intervals no greater than 500 hours of flight.
Probable Cause: the wing spar fatigue and wing separation while maneuvering. A factor was that the fatigue was not detected by the mechanic during the last annual inspection.
Accident investigation:
 |
|
Sources:
NTSB: https://www.ntsb.gov/_layouts/ntsb.aviation/brief.aspx?ev_id=20001212X21192&key=1
History of this aircraft
Other occurrences involving this aircraft
| 21 June 1982 | N9228W | Aguet | 0 | Near Rapelje, MT | |
sub |
Revision history:
| Date/time | Contributor | Updates |
|---|---|---|
| 24-Oct-2008 10:30 | ASN archive | Added |
| 21-Dec-2016 19:23 | ASN Update Bot | Updated [Time, Damage, Category, Investigating agency] |
| 12-Dec-2017 18:51 | ASN Update Bot | Updated [Operator, Departure airport, Source, Narrative] |
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