NTSB Identification: FTW90LA003.
The docket is stored on NTSB microfiche number 41060.
Accident occurred Wednesday, October 04, 1989 in NEW IBERIA, LA
Probable Cause Approval Date: 06/25/1992
Aircraft: AEROSPATIALE 350D, registration: N3606Y
Injuries: 2 Uninjured.

NTSB investigators may not have traveled in support of this investigation and used data provided by various sources to prepare this aircraft accident report.

DURING THE RECURRENT TRAINING FLIGHT, THE INSTRUCTOR PILOT ANNOUNCED A FORCED LANDING AND REDUCED THE FUEL CONTROL LEVER TO FLIGHT IDLE. THE SECOND PILOT UNDER INSTRUCTION INITIATED AN AUTOROTATION AND EXECUTED THE MANEUVER IN A SATISFACTORY MANNER UNTIL TOUCHDOWN. THE SECOND PILOT FAILED TO LEVEL THE HELICOPTER PRIOR TO THE TOUCHDOWN ON THE SOD, RESULTING IN THE REAR SKIDS CONTACTING THE GROUND FIRMLY. THE MAIN ROTOR SYSTEM FLEXED REARWARD AND A MAIN ROTOR BLADE CONTACTED AND SEVERED THE TAILBOOM.

The National Transportation Safety Board determines the probable cause(s) of this accident to be:

THE SECOND PILOT'S (UNDER INSTRUCTION) MISJUDGEMENT OF AIRCRAFT ATTITUDE DURING THE LEVEL OFF PHASE OF THE AUTOROTATION

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