Accident Fairchild Hiller FH-1100 N5051F, Sunday 4 March 1984

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Date:	Sunday 4 March 1984
Time:	11:45 LT
Type:	Fairchild Hiller FH-1100
Owner/operator:	Gulkana Air Service
Registration:	N5051F
MSN:	197
Total airframe hrs:	4598 hours
Engine model:	Allison 250-C18
Fatalities:	Fatalities: 0 / Occupants: 4
Other fatalities:	0
Aircraft damage:	Substantial
Category:	Accident
Location:	Glennallen, AK - United States of America
Phase:	En route
Nature:	Unknown
Departure airport:	Glennallen, AK (GKN
Destination airport:
Investigating agency:	NTSB
Confidence Rating:	Accident investigation report completed and information captured

Narrative:
THE PLT EXPERIENCED A DOWNDRAFT, WHILE APPROACHING A GLACIER AT 5500 FT MSL. IN TURNING DOWNGRADE TO TRY TO AFFECT A DESCENT OF THE ACFT, CONTROL WAS LOST AND THE HELICOPTER COLLIDED WITH THE GROUND. THE ACFT ROLLED INVERTED AFTER GROUND CONTACT.

Probable Cause:

Accident investigation: