ASN Wikibase Occurrence # 376829
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| Date: | Friday 5 July 1985 |
| Time: | 18:00 LT |
| Type: |  Cessna 170B |
| Owner/operator: | Private |
| Registration: | N2432D |
| MSN: | 20584 |
| Total airframe hrs: | 2980 hours |
| Engine model: | FRANKLIN O-300 |
| Fatalities: | Fatalities: 0 / Occupants: 2 |
| Aircraft damage: | Substantial |
| Category: | Accident |
| Location: | Swan Lake, MT -
 United States of America
|
| Phase: | En route |
| Nature: | Private |
| Departure airport: | Spotted Bear, MT (8U4 |
| Investigating agency: | NTSB |
| Confidence Rating: |  Accident investigation report completed and information captured |
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.
Probable Cause:
Accident investigation:
 |
|
Sources:
NTSB DEN85LA181
Location
Revision history:
| Date/time | Contributor | Updates |
|---|---|---|
| 29-Mar-2024 20:16 | ASN Update Bot | Added |
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