Accident Fairchild Hiller FH-1100 N442FH, Thursday 26 July 1990

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Date:	Thursday 26 July 1990
Time:	14:15 LT
Type:	Fairchild Hiller FH-1100
Owner/operator:	Modern Transportation Mode
Registration:	N442FH
MSN:	165
Engine model:	Allison 250-C18
Fatalities:	Fatalities: 0 / Occupants: 2
Other fatalities:	0
Aircraft damage:	Substantial
Category:	Accident
Location:	Ozark, MO - United States of America
Phase:	En route
Nature:	Private
Departure airport:	Nixa, MO
Destination airport:	Ozark, MO (MU70)
Investigating agency:	NTSB
Confidence Rating:	Accident investigation report completed and information captured

Narrative:
THE PLT SAID THAT WHILE IN CRUISE, HE HEARD A LOUD POP FROM THE REAR OF THE HELICOPTER, THEN THE TURBINE BEGAN TO SPOOL DOWN. AN EMERENCY AUTOROTATION, RUN-ON LDG WAS ATTEMPTED WHICH RESULTED IN A TAIL ROTOR STRIKE, THEN A ROLL-OVER. POST ACCIDENT INVESTIGATION REVEALED A FAILED #2 TURBINE SHAFT BEARING.

Probable Cause: TOTAL LOSS OF ENGINE POWER DUE TO #2 TURBINE SHAFT BEARING FAILURE. A FACTOR RELATED TO THE ACCIDENT WAS: NONE SUITABLE TERRAIN.

Accident investigation: