On June 5, 1992, a Cessna 182 (registration N5381B) operated by James D. Onyon was involved in an aviation accident near Coweta, OK. Investigators recorded the probable cause as: Loss of engine power due to an undetermined cause, with no evidence of pre-impact mechanical failure found during inspection. This summary draws on records from the U.S. National Transportation Safety Board (NTSB) historical archive; 8 related events involving the same aircraft type or operator are linked below.
A light aircraft suffered an uncommanded engine power loss during cruise flight at low altitude, leading to a collision with a tree and subsequent submersion in a river.
What happened
The pilot departed on a cross-country flight with scheduled landings at three airports. After departing the last scheduled stop, cruise was established at 1,800 feet. Fifteen minutes later, a popping sound was heard from the engine and about a minute later engine power was lost without further warning. The airplane impacted a tree prior to submerging in a river. The pilot stated that he had 25 gallons of fuel remaining prior to his last departure.
The investigation
Engine teardown failed to disclose any mechanical problem that would have prevented normal engine operation.
Probable cause
Loss of engine power due to an undetermined cause, with no evidence of pre-impact mechanical failure found during inspection.
What happened in the 5 Jun 1992 Cessna 182 accident near Coweta, OK?
A light aircraft suffered an uncommanded engine power loss during cruise flight at low altitude, leading to a collision with a tree and subsequent submersion in a river.
What aircraft was involved and where did it happen?
The accident on 5 Jun 1992 involved a Cessna 182, registration N5381B, operated by James D. Onyon, at Coweta, OK.
What was the probable cause of the accident?
Loss of engine power due to an undetermined cause, with no evidence of pre-impact mechanical failure found during inspection.
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