ASN Wikibase Occurrence # 360321
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| Date: | Sunday 12 June 1994 |
| Time: | 17:20 LT |
| Type: |  RotorWay Exec |
| Owner/operator: | Discovery Hedge, Inc. |
| Registration: | N727TB |
| MSN: | 3664 |
| Total airframe hrs: | 274 hours |
| Engine model: | ROTORWAY |
| Fatalities: | Fatalities: 0 / Occupants: 1 |
| Aircraft damage: | Substantial |
| Category: | Accident |
| Location: | Johnson City, NY -
 United States of America
|
| Phase: | En route |
| Nature: | Private |
| Departure airport: | Norwich, NY (KOIC) |
| Endicott, NY (N17) | |
| Investigating agency: | NTSB |
| Confidence Rating: |  Accident investigation report completed and information captured |
THE HELICOPTER WAS IN CRUISE FLIGHT WHEN A SUDDEN LOSS OF TAIL ROTOR EFFECTIVENESS OCCURRED. THE PILOT STATED THAT HE APPLIED ANTI-TORQUE PEDAL WITH NO EFFECT. THE PILOT ENTERED AN AUTOROTATION AND THE HELICOPTER CONTINUED IN A SLOW SPIN TO THE LEFT. THE PILOT STATED THAT HE UTILIZED FULL UP COLLECTIVE JUST PRIOR TO TOUCHDOWN, BUT THE HELICOPTER ROLLED ONTO ITS LEFT SIDE AFTER GROUND CONTACT AND WAS SUBSTANTIALLY DAMAGED. AN EXAMINATION OF THE WRECKAGE REVEALED THAT THE FORWARD TAIL ROTOR DRIVE BELT FAILED. THE PLIES ON THE BELT HAD SEPARATED. THE BELT HAD BEEN REPLACED AT THE LAST INSPECTION, AND HAD ACCUMULATED 57.9 HOURS SINCE NEW. THE CHANGE-OUT TIME FOR THE BELT AS RECOMMENDED BY THE COMPANY THAT PROVIDED THE KIT WAS 250 HOURS. A NEWER KEVLAR DRIVE BELT WAS RECOMMENDED BY THE COMPANY AFTER THE ACCIDENT. NO DISCREPANCIES OR UNRESOLVED OPEN ITEMS WERE FOUND IN THE MAINTENANCE LOG BOOKS.
Probable Cause: THE FAILURE OF THE TAIL ROTOR DRIVE BELT DUE TO UNDETERMINED REASONS. THIS LED TO A LOSS OF DIRECTIONAL CONTROL AND AN AUTOROTATION.
Accident investigation:
 |
|
Sources:
NTSB BFO94LA098
History of this aircraft
Other occurrences involving this aircraft
| 17 September 1992 | N727TB | Private | 0 | Endicott, NY | |
sub |
Location
Revision history:
| Date/time | Contributor | Updates |
|---|---|---|
| 15-Mar-2024 20:26 | ASN Update Bot | Added |
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