Accident RotorWay Exec N336CS, Sunday 25 June 1995

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Date:	Sunday 25 June 1995
Time:	09:30 LT
Type:	RotorWay Exec
Owner/operator:	Private
Registration:	N336CS
MSN:	3448
Total airframe hrs:	65 hours
Engine model:	ROTORWAY RW-152
Fatalities:	Fatalities: 0 / Occupants: 1
Other fatalities:	0
Aircraft damage:	Substantial
Category:	Accident
Location:	Enumclaw, WA - United States of America
Phase:	En route
Nature:	Private
Departure airport:	Buckley, WA (WN87)
Destination airport:
Investigating agency:	NTSB
Confidence Rating:	Accident investigation report completed and information captured

Narrative:
THE PILOT SAID THAT SHORTLY AFTER TAKEOFF, WHILE CLIMBING THROUGH 300-400 FT, THE ENGINE SURGED. HE REDUCED COLLECTIVE AND EXECUTED AN AUTOROTATION, AND STATED THAT HE SHUT OFF THE MAGNETOS AND ATTEMPTED AN UNSUCCESSFUL RESTART. THE HELICOPTER SUSTAINED SUBSTANTIAL DAMAGE DURING THE HARD LANDING WITH SOME FORWARD VELOCITY. THE REASON FOR THE POWER SURGE WAS NOT DETERMINED.

Probable Cause: A POWER SURGE FOR UNDETERMINED REASONS, AND THE PILOT'S MISJUDGEMENT OF DISTANCE AND ALTITUDE DURING THE AUTOROTATION.

Accident investigation: