ASN Wikibase Occurrence # 355739
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| Date: | Monday 16 June 1997 |
| Time: | 12:28 LT |
| Type: |  Bell 47G-3B-1 |
| Owner/operator: | U.s. Dept. Of The Interior |
| Registration: | N1335X |
| MSN: | 6556 |
| Year of manufacture: | 1966 |
| Total airframe hrs: | 10151 hours |
| Engine model: | Lycoming TVO-435-B1A |
| Fatalities: | Fatalities: 0 / Occupants: 3 |
| Aircraft damage: | Substantial |
| Category: | Accident |
| Location: | Fallon, NV -
 United States of America
|
| Phase: | Manoeuvring (airshow, firefighting, ag.ops.) |
| Nature: | Unknown |
| Departure airport: | , NV (KFLX) |
| Investigating agency: | NTSB |
| Confidence Rating: |  Accident investigation report completed and information captured |
The engine of the helicopter lost power after about 3 hours of flying. An autorotative descent was made to a site at 6,500 feet density altitude, and the helicopter was damaged during the landing. After the accident, 1.9 gallons of fuel were drained from the entire fuel system. The helicopter's unusable fuel quantity was 2.5 gallons. Examination of the helicopter revealed no evidence of a preaccident mechanical malfunction or failure. A manufacturer's representative opined that an autorotative landing at 6,500 feet density altitude would likely result in a hard landing. The engine carburetor flow tested within the manufacturer's specifications.
Probable Cause: exhaustion of the aircraft's fuel supply, due to improper planning and/or decision. A factor related to the accident was the high density altitude which made a successful autorotative landing unlikely.
Accident investigation:
 |
|
Sources:
NTSB LAX97TA213
History of this aircraft
Other occurrences involving this aircraft
| 26 July 1969 | N1335X | HENDRICKSON FLYING SERVICE INC | 2 | Hope, British Columbia |  |
w/o |
| Mid-air collision | ||||||
| 10 September 1996 | N1335X | Private | 0 | Rangely, CO | |
sub |
Location
Revision history:
| Date/time | Contributor | Updates |
|---|---|---|
| 12-Mar-2024 15:05 | ASN Update Bot | Added |
Corrections or additions? ... Edit this accident description
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