NTSB Identification: SEA89LA172.
The docket is stored on NTSB microfiche number 40874.
Accident occurred Thursday, September 14, 1989 in HILLSBORO, OR
Probable Cause Approval Date: 06/22/1992
Aircraft: ROBINSON R22 BETA, registration: N358JS
Injuries: 1 Serious,1 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.

WHILE DEMONSTRATING A 180 DEGREE AUTOROTATION, THE HELICOPTER DESCENDED TOO RAPIDLY. THE INSTRUCTOR TRIED TO CUSHION THE IMPACT, HOWEVER, THE TAIL ROTOR CONTACTED THE GROUND FIRST FOLLOWED BY THE SKIDS. THE LEFT SKID COLLAPSED AND THE HELICOPTER ROLLED OVER.

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

THE PILOT MISJUDGING ALTITUDE AND AIRSPEED.

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