Serious incident Cessna 207 N75738, Saturday 14 January 1984

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Date:	Saturday 14 January 1984
Time:	18:22 LT
Type:	Cessna 207
Owner/operator:	Bering Air, Inc.
Registration:	N75738
MSN:	20700641
Total airframe hrs:	2428 hours
Engine model:	Continental TSIO-520
Fatalities:	Fatalities: 0 / Occupants: 1
Other fatalities:	0
Aircraft damage:	Minor
Category:	Serious incident
Location:	Kotzebue, AK - United States of America
Phase:	Initial climb
Nature:	Unknown
Departure airport:	Kotzebue, AK (OTZ)
Destination airport:	Noorvik, AK (ORV)
Investigating agency:	NTSB
Confidence Rating:	Accident investigation report completed and information captured

Narrative:
THE PLT STATED THAT SHORTLY AFTER TAKEOFF THE ENG STARTED TO RUN ROUGH & THEN FAILED COMPLETELY. INVESTIGATION REVEALED THAT THE CRANKSHAFT HAD FAILED IN FATIQUE. LABORATORY TEST SHOWED A CORE HARDNESS BELOW THE MINIMUM SPECIFIED.

Probable Cause:

Accident investigation: