SWAN LAKE, MT, USA
N2432D
CESSNA 170B
THE PLT SAID THAT PRIOR TO DEPARTURE THERE WAS AN ESTIMATED 14 GALS OF FUEL ON BOARD. AFTER APRX 30 MINUTES OF FLIGHT THE ENG LOST ALL PWR AND A FORCED LANDING WAS ACCOMPLISHED IN A MOUNTAINOUS CREEK BED. DURING THE LANDING ROLL THE ACFT STRUCK A FEELED TREE AND OVERTURNED. POST-CRASH EXAM OF THE ACFT REVEALED ONLY TRACE AMOUNTS OF FUEL IN THE FUEL TANKS, LINES, CARBURETOR BOWL, AND ACCELERATOR PUMP. NO FUEL WAS FOUND IN THE GASCOLATOR. THE ENG WAS LATER TEST RUN AND OPERATED SATISFACTORILY. THE FUEL LINE BETWEEN THE FIREWALL AND CARBURETOR WAS SAID TO BE A RUBBER VACUUM LINE AND AN UNAPPROVED INSTALLATION. THE LINE WAS SO DETERIORATED AND BRITTLE THAT IT BROKE INTO SEVERAL PIECES WHILE BEING REMOVED FOR EXAMINATION. THE PLT REPORTED HE USED A STOPWATCH TO KEEP TRACK OF THE FUEL SUPPLY BECAUSE THE FUEL GAGES WERE INACCURATE.
Source: NTSB Aviation Accident Database
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