On August 25, 1986, a Cessna 172A (registration N7405T) was involved in an aviation accident near San Juan Island, WA. Investigators recorded the probable cause as: The pilot's failure to monitor fuel quantity, which led to fuel exhaustion and engine power loss during low-altitude operations. This summary draws on records from the U.S. National Transportation Safety Board (NTSB) historical archive.
A pilot flying low to spot fish ran the right fuel tank dry, causing engine failure. Unable to switch tanks at low altitude, he attempted a forced landing near the shoreline but struck trees.
What happened
The pilot was operating the aircraft at a very low altitude with the specific intent of spotting fish from the air. During this operation, the pilot allowed the right fuel tank to become completely dry, which resulted in the engine stopping unexpectedly. Because the aircraft was flying at such a low altitude, the pilot did not have sufficient height or time to switch to the other fuel tank and attempt an engine restart.
Consequently, the pilot initiated a forced landing procedure close to the shoreline. During the descent and impact phase of this forced landing, the aircraft collided with trees located near the shore.
Probable cause
The pilot's failure to monitor fuel quantity, which led to fuel exhaustion and engine power loss during low-altitude operations.
What happened in the 25 Aug 1986 Cessna 172A accident near San Juan Island, WA?
A pilot flying low to spot fish ran the right fuel tank dry, causing engine failure. Unable to switch tanks at low altitude, he attempted a forced landing near the shoreline but struck trees.
What aircraft was involved and where did it happen?
The accident on 25 Aug 1986 involved a Cessna 172A, registration N7405T, at San Juan Island, WA.
What was the probable cause of the accident?
The pilot's failure to monitor fuel quantity, which led to fuel exhaustion and engine power loss during low-altitude operations.
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