1989-09-20: Cessna 185 — Mulchatna River, AK

Casualties unknown • Mulchatna River, AK, US

Probable cause

IMPROPER PLANNING/DECISION BY THE PILOT, WHICH RESULTED IN FUEL EXHAUSTION DUE TO AN INADEQUATE SUPPLY OF FUEL. FACTORS RELATED TO THE ACCIDENT WERE: LOSS OF FUEL THAT HAD SIPHONED (LEAKED) FROM THE AIRCRAFT BEFORE TAKEOFF AND TREE(S) OVERHANGING THE FAST MOVING RIVER.

— NTSB Determination

Accident narrative

BEFORE TAKING OFF FROM AN UNNAMED LAKE, THE PLT NOTED FUEL HAD SIPHONED FROM THE FUEL TANKS, BUT HE THOUGHT HE HAD ENOUGH FUEL TO GET TO PORT ALSWORTH, AK. EN ROUTE, THE ENG LOST POWER & A FORCE LANDING WAS MADE ON A SWIFT MOVING RIVER. AFTER LANDING, THE RIVER SWEPT THE FLOATPLANE REARWARED INTO AN OVER HANGING TREE, WHICH CAUSED IT TO NOSE OVER. A PERSON AT THE DEPARTURE POINT STATED THAT JUST PRIOR TO THE FLT, HE SAW FUEL DRIPPING FROM THE WING AND A SLICK ON THE WATER.

Frequently asked questions

What happened in the 1989-09-20 Cessna 185 accident near Mulchatna River, AK?

BEFORE TAKING OFF FROM AN UNNAMED LAKE, THE PLT NOTED FUEL HAD SIPHONED FROM THE FUEL TANKS, BUT HE THOUGHT HE HAD ENOUGH FUEL TO GET TO PORT ALSWORTH, AK. EN ROUTE, THE ENG LOST POWER & A FORCE LANDING WAS MADE ON A SWIFT MOVING RIVER. AFTER LANDING, THE RIVER SWEPT THE FLOATPLANE REARWARED INTO AN OVER HANGING…

What aircraft was involved and where did it happen?

The accident on 1989-09-20 involved a Cessna 185, registration N4443R, at Mulchatna River, AK.

What was the probable cause of the accident?

IMPROPER PLANNING/DECISION BY THE PILOT, WHICH RESULTED IN FUEL EXHAUSTION DUE TO AN INADEQUATE SUPPLY OF FUEL. FACTORS RELATED TO THE ACCIDENT WERE: LOSS OF FUEL THAT HAD SIPHONED (LEAKED) FROM THE AIRCRAFT BEFORE TAKEOFF AND TREE(S) OVERHANGING THE FAST MOVING RIVER.

Investigation report by the U.S. National Transportation Safety Board (NTSB) historical archive. Original record: https://carol.ntsb.gov/event/20001213X29279. This page is a structured re-presentation; facts and quotes are in the National Transportation Safety Board (NTSB), United States.

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