Accident Robinson R22HP N622SC, Saturday 18 June 1988

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Date:	Saturday 18 June 1988
Time:	16:00 LT
Type:	Robinson R22HP
Owner/operator:	Aviation Training Academy
Registration:	N622SC
MSN:	0052
Year of manufacture:	1980
Total airframe hrs:	1995 hours
Engine model:	Lycoming O-320-B2C
Fatalities:	Fatalities: 0 / Occupants: 2
Other fatalities:	0
Aircraft damage:	Substantial
Category:	Accident
Location:	Copake Falls, NY - United States of America
Phase:	Unknown
Nature:	Training
Departure airport:	Danbury, CT (KDXR)
Destination airport:	Pittsfield, MA (KPSF)
Investigating agency:	NTSB
Confidence Rating:	Accident investigation report completed and information captured

Narrative:
DURING A PRACTICE AUTOROTATION TO AN OPEN FIELD, THE AIRCRAFT STRUCK A WIRE THAT HAD NOT BEEN OBSERVED. AN ATTEMPT TO FLY OVER THE WIRE WAS UNSUCCESSFUL AND THE TAIL ROTOR AND AFT 1/3 OF THE TAIL CONE WAS SEVERED FROM THE HELICOPTER. A HOVERING AUTOROTATION FROM 20 FEET AGL WAS THEN PERFORMED WHICH RESULTED IN BENT SKIDS AND THE MAIN ROTOR BLADES BEING DESTROYED.

Probable Cause:

Accident investigation: