ASN Wikibase Occurrence # 366254
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| Date: | Sunday 2 September 1990 |
| Time: | 12:35 LT |
| Type: | Bell 47G-3B1 Soloy |
| Owner/operator: | Tracie Crocker |
| Registration: | N73957 |
| MSN: | 2827 |
| Year of manufacture: | 1963 |
| Engine model: | Allison 250C20B |
| Fatalities: | Fatalities: 0 / Occupants: 1 |
| Aircraft damage: | Substantial |
| Category: | Accident |
| Location: | Canon City, CO -
 United States of America
|
| Phase: | Approach |
| Nature: | Private |
| Departure airport: | |
| Investigating agency: | NTSB |
| Confidence Rating: |  Accident investigation report completed and information captured |
THE HELICOPTER COLLIDED WITH POWER LINES WHILE ON A DOWNWIND TO THE HELIPAD. ACCORDING TO WITNESSES, THE HELICOPTER WAS TRAVELLING PERPENDICULAR TO AN ELECTRICAL TRANSMISSION LINE AT ABOUT 60 KNOTS WHEN IT COLLIDED WITH THE TOP OF A TWO WIRE SET AT ABOUT 30 FEET AGL. PAINT TRANSFER FROM THE T/R SKID WAS FOUND ON THE DAMAGED POWER LINE. AFTER STRIKING THE WIRE THE T/R SEPARATED AT THE GEAR BOX MOUNTING FLANGE; SMALL PIECES OF THE T/R BLADE WERE FOUND ON THE GROUND BELOW THE POINT OF INITIAL WIRE CONTACT. THE PILOT STATED THAT DURING THE DOWNWIND CLIMBING TURN AFTER TAKEOFF, AND WHILE PASSING OVER A GULLY NEAR A 6,200-FT RIDGE, HE HAD AN ENCOUNTER WITH WINDSHEAR AT 230 FEET AGL WHICH RESULTED IN LOSS OF 200 FEET AND THE SUBSEQUENT COLLISION. THE EXISTENCE OF THE REPORTED 'WINDSHEAR', OR POSSIBLE DOWNDRAFT COULD NOT BE VERIFIED.
Probable Cause: THE PILOT'S FAILURE TO MAINTAIN AN ADEQUATE PATTERN ALTITUDE AND THE POSSIBLE EXISTENCE OF ADVERSE WINDS DUE TO THE SURROUNDING TERRAIN.
Accident investigation:
 |
|
Sources:
NTSB DEN90LA180
History of this aircraft
Other occurrences involving this aircraft
| 8 September 1998 | N73957 | Clarke Environmental Mosquito | 0 | Buckhead Ridge, FL | |
sub |
Location
Revision history:
| Date/time | Contributor | Updates |
|---|---|---|
| 20-Mar-2024 19:00 | ASN Update Bot | Added |
Corrections or additions? ... Edit this accident description
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