NTSB Identification: NYC85LA208.
The docket is stored on NTSB microfiche number 29112.
Accident occurred Monday, August 12, 1985 in GROTON, CT
Aircraft: ENSTROM F-28F, registration: N8623X
Injuries: 2 Minor.

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

ENSTROM F28F, N8623X WAS PERFORMING AUTO ROTATION AT GROTON-NEW LONDON, CONNECTICUT WHEN A LOSS OF POWER WAS EXPERIENCED, THE STUDENT PILOT WAS AT THE CONTROLS AND ENTERED AUTO ROTATION WITH THE UNDERSTANDING THAT IT WOULD TERMINATE IN A POWER RECOVERY. AFTER THE FLARE WITH THE SKIDS LEVEL AND DIRECTIONAL CONTROL BEING THE MAINTAINED, COLLECTIVE PITCH WAS APPIED, AN INCREASE IN RPM WAS OBSERVED. THEN A RAPID DECREASE IN RPM OCCURRED. THE INSTRUCTOR PILOT TOOK OVER IN AN ATTEMPT TO LAND ACFT STRAIGHT AHEAD. AT TOUCHDOWN THE HELICOPTER VEERED LEFT. THE SKIDS FAILED IN AN OUTWARD DIRECTION AND THE MAIN ROTOR STRUCK THE GROUND.

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

POWERPLANT CONTROLS..IMPROPER USE OF..PILOT IN COMMAND(CFI)

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

DIRECTIONAL CONTROL..NOT MAINTAINED..PILOT IN COMMAND(CFI)


Contributing Factors

LANDING GEAR,SKID ASSEMBLY..OVERLOAD


Contributing Factors

EMERGENCY PROCEDURE..SIMULATED..PILOT IN COMMAND(CFI)

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