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ASN Wikibase Occurrence # 135340
Last updated: 18 November 2021
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Type:Silhouette image of generic SS2T model; specific model in this crash may look slightly different
Ayres S-2R-G10 Turbo Thrush
Owner/operator:Peterson Aerial Spraying
Registration: N3299A
MSN: G10-117
Fatalities:Fatalities: 0 / Occupants: 1
Other fatalities:0
Aircraft damage: Written off (damaged beyond repair)
Location:Staples, MN -   United States of America
Phase: Unknown
Departure airport:Clarissa, MN (8Y5)
Destination airport:Staples, MN (SAZ)
Investigating agency: NTSB
The agricultural airplane received substantial damage during a forced landing subsequent to an aerial application. The pilot initiated a climb to the nearest airport when he noticed instrument indications of low oil pressure. About five seconds later, the propeller went into feather and the engine stopped. The pilot stated that he had never landed with a feathered propeller and when he attempted to land in a clearing, he floated across it and into trees at the far end. The examination revealed a separation through the oil jet flange consistent with high cycle fatigue that initiated at several locations along the flange surface. No tool marks were noted in the area. The oil jet flange material was consistent with the specified aluminum alloy.
Probable Cause: The fatigue fracture of the oil jet flange resulting in a total engine failure during the aerial application.



Revision history:

21-Dec-2016 19:26 ASN Update Bot Updated [Time, Damage, Category, Investigating agency]
08-Dec-2017 18:53 ASN Update Bot Updated [Other fatalities, Departure airport, Destination airport, Source, Narrative]

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