NTSB Identification: NYC88LA210.
The docket is stored on NTSB microfiche number 38675.
Accident occurred Friday, August 05, 1988 in ASHBURNHAM, MA
Probable Cause Approval Date: 01/24/1990
Aircraft: ROBINSON R22, registration: N90789
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.

A STUDENT PILOT AND FLIGHT INSTRUCTOR WERE MAKING A PRACTICE PINNACLE APPROACH. THE STUDENT PILOT TRIED TO TERMINATE THE DESCENT, BUT WAS UNABLE AND A LANDING ON ROUGH TERRAIN TOOK PLACE. THE HELICOPTER ROLLED OVER AND RECEIVED SUBSTANTIAL DAMAGE BUT THE TWO OCCUPANTS WERE NOT INJURED. THE FLIGHT INSTRUCTOR FAILED TO REALIZE THE PERFORMANCE PARAMETERS OF THE HELICOPTER WERE BEING EXCEEDED IN TIME TO TERMINATE THE APPROACH.

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

IN-FLIGHT PLANNING/DECISION..IMPROPER..PILOT IN COMMAND(CFI)

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

PROPER DESCENT RATE..EXCEEDED..DUAL STUDENT

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

SUPERVISION..INADEQUATE..PILOT IN COMMAND(CFI)


Contributing Factors

TERRAIN CONDITION..ROUGH/UNEVEN


Contributing Factors

PERFORMANCE DATA..MISJUDGED..PILOT IN COMMAND(CFI)

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