ASN Wikibase Occurrence # 297166
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| Date: | Monday 10 June 2002 |
| Time: | 08:30 LT |
| Type: |  Enstrom F-28C |
| Owner/operator: | Falcon Helicopter, Inc. |
| Registration: | N5694Z |
| MSN: | 497-2 |
| Year of manufacture: | 1980 |
| Total airframe hrs: | 1999 hours |
| Engine model: | Lycoming HIO-360-E1AD |
| Fatalities: | Fatalities: 0 / Occupants: 2 |
| Aircraft damage: | Substantial |
| Category: | Accident |
| Location: | Medicine Bow, Wyoming -
 United States of America
|
| Phase: | Unknown |
| Nature: | Executive |
| Departure airport: | Laramie Regional Airport, WY (LAR/KLAR) |
| Rawlins Airport, WY (RWL/KRWL) | |
| Investigating agency: | NTSB |
| Confidence Rating: |  Accident investigation report completed and information captured |
The pilot reported that he was conducting pipeline patrol and marking the positions of pipeline valves using a global positioning satellite receiver. The pilot said weather was clear but windy. Approximately 1 hour into the flight, the pilot made a turn to the west to come around over a location, and continued in the turn back to the east downwind. The pilot said he rolled out of the turn and started to pull some power for the turn back to the right to pick up the pipeline again when the helicopter yawed right and started losing power. The pilot said he immediately "lowered the collective, added throttle, and turned left to the north." The pilot said he was approximately 100 feet above the ground and had an airspeed of about 60 miles per hour. "With the bank and the autorotation I was able to stop forward motion and ground speed. I flared the helicopter, pulled pitch, and hit flat." The pilot said he shut down the engine after impact. "As far as I could tell the power never came back during the autorotation." An examination of the helicopter's fuel system showed water in the left and right fuel tanks. No other anomalies were found.
Probable Cause: the unsuitable terrain encountered during the emergency autorotation, following a partial loss of engine power. Factors contributing to this accident were fuel contamination (water), the low altitude, the high winds, and the tailwind.
Accident investigation:
 |
|
Sources:
NTSB DEN02LA051
Revision history:
| Date/time | Contributor | Updates |
|---|---|---|
| 14-Oct-2022 15:15 | ASN Update Bot | Added |
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