Accident Cessna 340A N4604N, Thursday 28 January 1982

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Date:	Thursday 28 January 1982
Time:	08:45 LT
Type:	Cessna 340A
Owner/operator:	Private
Registration:	N4604N
MSN:	340A1016
Year of manufacture:	1980
Total airframe hrs:	688 hours
Engine model:	Continental TSIO-520-NB
Fatalities:	Fatalities: 0 / Occupants: 2
Other fatalities:	0
Aircraft damage:	Substantial
Category:	Accident
Location:	Sunriver, OR - United States of America
Phase:	Take off
Nature:	Training
Departure airport:	Sunriver, OR (OR35)
Destination airport:	Laverne, CA
Investigating agency:	NTSB
Confidence Rating:	Accident investigation report completed and information captured

Narrative:
THE INSTRUCTOR WAS PROVIDING DUAL INSTRUCTION TO A PRIVATE PILOT WITH NO PREVIOUS TIME IN THIS NOR ANY MULTI- ENGINE AIRCRAFT. ALSO, THE PIRVATE PILOT HAD NOT FLOWN WITHIN THE PREVIOUS 90 DAYS. HE INITIATED A TAKEOFF ON RUNWAY 18 WITH THE WIND FROM 210 DEGREES AT 5 KNOTS. THE RUNWAY WAS COVERED WITH PACKED DRY SNOW. IT CONTAINED RUTS AND HAD HIGH SNOW PILED ALONG THE EDGES. WHILE ROLLING, THE AIRCRAFT DRIFTED LEFT AND THE LEFT WING STRUCK A SNOWBANK. THE PLANE THEN VEERED OFF THE RUNWAY AND WAS SUBSTANTIALLY DAMAGED.

Probable Cause:

Accident investigation: