Accident Robinson R22 Beta N358JS, Thursday 14 September 1989

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Date:	Thursday 14 September 1989
Time:	10:00 LT
Type:	Robinson R22 Beta
Owner/operator:	Hillsboro Helicopter
Registration:	N358JS
MSN:	0628
Year of manufacture:	1986
Total airframe hrs:	1253 hours
Engine model:	Lycoming O-360-J2A
Fatalities:	Fatalities: 0 / Occupants: 2
Other fatalities:	0
Aircraft damage:	Substantial
Category:	Accident
Location:	Hillsboro, OR - United States of America
Phase:	Manoeuvring (airshow, firefighting, ag.ops.)
Nature:	Training
Departure airport:
Destination airport:
Investigating agency:	NTSB
Confidence Rating:	Accident investigation report completed and information captured

Narrative:
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.

Probable Cause: THE PILOT MISJUDGING ALTITUDE AND AIRSPEED.

Accident investigation: