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ASN Wikibase Occurrence # 188236
Last updated: 10 January 2020
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Type:Silhouette image of generic BE35 model; specific model in this crash may look slightly different
Beechcraft P35 Bonanza
Registration: N112MB
C/n / msn: D-6945
Fatalities:Fatalities: 0 / Occupants: 1
Other fatalities:0
Aircraft damage: Substantial
Location:Atlantic Ocean off Weekapaug Beach, Westerly, RI -   United States of America
Phase: En route
Departure airport:Westhampton Beach, NY (FOK)
Destination airport:Taunton, MA (TAN)
Investigating agency: NTSB
During cruise flight over open water, the airplane experienced a total loss of engine power, and the private pilot ditched the airplane. Subsequent examination of the engine revealed that the oil filter adapter was loose and the fiber gasket was torn and partially extruded. Because of these conditions, oil leaked from the engine, which led to the failure of the Nos. 2 and 4 connecting rods due to a lack of oil lubrication. The oil filter adapter was not original equipment on the engine; it was installed under a supplemental type certificate which required that the oil filter adapter fiber gasket be replaced anytime the oil filter adapter was removed from the engine and reinstalled and every 300 hours or 3 years, whichever occurred first. Maintenance records indicated that the oil filter adapter was installed about 4 1/2 years before the accident. No other maintenance entries or records pertaining to the inspection of the fiber gasket was noted during the 4 years before the accident, and no record concerning the installation of a new oil filter adapter fiber gasket was located.

Probable Cause: A total loss of engine power due to inadequate maintenance of the oil filter adapter, which resulted in an oil leak and subsequent oil starvation to the engine.



Accident investigation:
Investigating agency: NTSB
Status: Investigation completed
Duration: 2 years and 3 months
Download report: Final report


Photo: FAA

Revision history:

18-Jun-2016 18:51 Geno Added
19-Jun-2016 05:47 Chieftain Updated [Time, Phase, Nature, Departure airport, Destination airport, Narrative]
21-Dec-2016 19:30 ASN Update Bot Updated [Time, Damage, Category, Investigating agency]
21-Mar-2017 22:59 Geno Updated [Departure airport, Destination airport, Source, Narrative]
16-Sep-2018 18:14 ASN Update Bot Updated [Departure airport, Destination airport, Source, Narrative, Accident report, ]
16-Sep-2018 18:38 harro Updated [Source, Narrative, Photo]

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