NTSB Identification: ATL87LA249.
The docket is stored on NTSB microfiche number 34047.
Accident occurred Sunday, September 06, 1987 in ENTERPRISE, AL
Probable Cause Approval Date: 05/27/1988
Aircraft: BELL 47G3B1, registration: N38CD
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 A PRACTICE AUTOROTATION, THE INSTRUCTOR PILOT DELAYED IN APPLING POWER TO ARREST THE AUTOROTATIVE DESCENT. THE OTHER PILOT REPORTED THAT THE AUTOROTATION PROFILE WAS WAS NOT THE SAME AS THE PREVIOUS SUCCESSFUL AUTOROTATION. THERE WERE NO REPORTED AIRCRAFT PROBLEMS WHICH WOULD HAVE PREVENTED THE FLIGHT CREW FROM A POWER RECOVERY. BOTH PILOTS WERE QUALIFIED CURRENT FLIGHT INSTRUCTORS.

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

ROTOR RPM..NOT MAINTAINED..DUAL STUDENT

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

THROTTLE/POWER CONTROL..DELAYED..DUAL STUDENT

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

REMEDIAL ACTION..DELAYED..PILOT IN COMMAND(CFI)


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