ASN Wikibase Occurrence # 371382
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| Date: | Monday 21 March 1988 |
| Time: | 12:00 LT |
| Type: |  Bell 47G-3B1 |
| Owner/operator: | Private |
| Registration: | N7863S |
| MSN: | 6630 |
| Total airframe hrs: | 5024 hours |
| Engine model: | LYCOMING TVO-435-B1A |
| Fatalities: | Fatalities: 0 / Occupants: 1 |
| Aircraft damage: | Substantial |
| Category: | Accident |
| Location: | Gobernador, NM -
 United States of America
|
| Phase: | Taxi |
| Nature: | Executive |
| Departure airport: | Gobernador, NM |
| Investigating agency: | NTSB |
| Confidence Rating: |  Accident investigation report completed and information captured |
THE COMMERICAL PLT WAS HOVERING OUT OF GROUND EFFECT AT 40 FEET AGL. DURING A MANEUVER HE REPORTED HEARING A LOUD BANG AND THE ROTOR RPM BEGAN TO DECAY. THE PLT MADE A HOVERING AUTOROTATION RESULTING IN A HARD LANDING. THE MAIN ROTOR STRUCK THE TAIL BOOM AND SEVERED IT. A POST ACCIDENT TRANSMISSION TEAR DOWN REVEALED THAT THE LOCKING ROLLERS IN THE FREE WHEELING UNIT HAD WORN BEYOND TOLERANCE, ALLOWING THE MAIN ROTOR TO BECOME AND REMAIN DISENGAGED FROM THE TRANSMISSION.
Probable Cause:
Accident investigation:
 |
|
Sources:
NTSB DEN88GA088
Location
Revision history:
| Date/time | Contributor | Updates |
|---|---|---|
| 25-Mar-2024 21:01 | ASN Update Bot | Added |
Corrections or additions? ... Edit this accident description
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