Accident Grumman AA-1A N6401L, Thursday 4 September 1986

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Date:	Thursday 4 September 1986
Time:	15:30 LT
Type:	Grumman AA-1A
Owner/operator:	Private
Registration:	N6401L
MSN:	AA1A-0401
Year of manufacture:	1972
Total airframe hrs:	1054 hours
Engine model:	Lycoming O-235-C2C
Fatalities:	Fatalities: 0 / Occupants: 2
Other fatalities:	0
Aircraft damage:	Substantial
Category:	Accident
Location:	Chinook, MT - United States of America
Phase:	Initial climb
Nature:	Private
Departure airport:	Chinook, MT (S71)
Destination airport:	Havre, MT (KHVR)
Investigating agency:	NTSB
Confidence Rating:	Accident investigation report completed and information captured

Narrative:
THE ACFT TOOK OFF ON A 3900-FOOT DRY ASPHALT RWY. AN UNCOMMANDED LEFT YAW DEVELOPED WHICH THE PLT WAS UNABLE TO COUNTER. THE ACFT STRUCK A FENCE OFF THE LEFT SIDE OF THE RWY AND NOSED OVER.

Probable Cause:

Accident investigation: