ASN Wikibase Occurrence # 368829
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| Date: | Saturday 6 May 1989 |
| Time: | 11:30 LT |
| Type: | Bell 47L |
| Owner/operator: | Allied Helicopters, Inc. |
| Registration: | N6330D |
| MSN: | 1044 |
| Total airframe hrs: | 7377 hours |
| Engine model: | FRANKLIN 6V-335-A |
| Fatalities: | Fatalities: 0 / Occupants: 2 |
| Aircraft damage: | Substantial |
| Category: | Accident |
| Location: | Tulsa, OK -
 United States of America
|
| Phase: | Taxi |
| Nature: | Training |
| Departure airport: | (5F2) |
| Investigating agency: | NTSB |
| Confidence Rating: |  Accident investigation report completed and information captured |
THE INSTRUCTOR PILOT SAID HE AND A BEGINNER STUDENT WERE IN A HOVER PRACTICE AREA AND WERE REPOSITIONING THE HELICOPTER TO ALLOW ANOTHER HELICOPTER TO HOVER OUT FROM THE RAMP. HE SAID HE ALLOWED THE STUDENT TO FOLLOW HIM ON THE CONTROLS, AND DURING THE HOVER LANDING, A GUST OF WIND CAUSED THE TAIL TO PITCH UP. AN UNEXPECTED CONTROL INPUT BY THE STUDENT CAUSED AN OVERCORRECTION WHICH ALLOWED THE TAIL ROTOR TO STRIKE THE GROUND. THERE WAS DAMAGE TO THE TAIL ROTOR, THE SKIDS, AND THE BUBBLE CANOPY.
Probable Cause: INADEQUATE SUPERVISION OF THE STUDENT BY THE INSTRUCTOR IN THAT HE ALLOWED THE STUDENT TO OVERPOWER HIS CONTROL INPUTS AFTER AN UNEXPECTED GUST OF WIND MOVED THE TAIL OF THE HELICOPTER.
Accident investigation:
 |
|
Sources:
NTSB FTW89LA092
Location
Revision history:
| Date/time | Contributor | Updates |
|---|---|---|
| 24-Mar-2024 07:49 | ASN Update Bot | Added |
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