ASN Wikibase Occurrence # 364654
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| Date: | Saturday 24 August 1991 |
| Time: | 07:59 LT |
| Type: | Bell L4 EXPERIMENTAL |
| Owner/operator: | Bell Helicopter Textron, Inc. |
| Registration: | N2770X |
| MSN: | 51022 |
| Total airframe hrs: | 3541 hours |
| Engine model: | Allison 250C30P |
| Fatalities: | Fatalities: 0 / Occupants: 2 |
| Aircraft damage: | Substantial |
| Category: | Accident |
| Location: | Arlington, TX -
 United States of America
|
| Phase: | Landing |
| Nature: | Unknown |
| Departure airport: | (0 ) |
| Investigating agency: | NTSB |
| Confidence Rating: |  Accident investigation report completed and information captured |
THE FLIGHT TEST PILOT WAS CONDUCTING HEIGHT/VELOCITY MANEUVERS ON THE MANUFACTURERS NEW HELICOPTER. A PLANNED AUTOROTATION WAS INITIATED TO THE RUNWAY. A HARD LANDING OCCURRED, AND A MAIN ROTORBLADE CONTACTED THE TAILBOOM, SEVERING IT. AN EYEWITNESS STATED THE HELICOPTER TOUCHED DOWN ON THE REAR SKIDS AND BOUNCED SEVERAL TIMES BEFORE THE TAILBOOM SEPARATED. NO MECHANICAL FAILURE WAS REPORTED BY THE PILOT.
Probable Cause: THE PILOT'S FAILURE TO MAINTAIN ADEQUATE ROTOR RPM DURING THE PLANNED AUTOROTATION AND HIS IMPROPER TOUCHDOWN.
Accident investigation:
 |
|
Sources:
NTSB FTW91LA154
Location
Revision history:
| Date/time | Contributor | Updates |
|---|---|---|
| 19-Mar-2024 17:24 | ASN Update Bot | Added |
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