Accident Air Tractor AT-502B N61315, Friday 10 July 2020

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Date:	Friday 10 July 2020
Time:	14:55 LT
Type:	Air Tractor AT-502B
Owner/operator:	Bailey Flying Service Inc.
Registration:	N61315
MSN:	502B-0305
Year of manufacture:	1995
Total airframe hrs:	7904 hours
Engine model:	Pratt & Whitney PT6A-34
Fatalities:	Fatalities: 0 / Occupants: 1
Other fatalities:	0
Aircraft damage:	Substantial
Category:	Accident
Location:	Dalhart, Texas - United States of America
Phase:	En route
Nature:	Survey
Departure airport:	Dalhart Airport, TX (DHT/KDHT)
Destination airport:	Dalhart Airport, TX (DHT/KDHT)
Investigating agency:	NTSB
Confidence Rating:	Accident investigation report completed and information captured

Narrative:
The operator reported that the pilot was returning to the airport after completing an aerial application when the engine lost power. The pilot executed a forced landing to a pasture. An engine examination revealed that the fuel control unit (FCU) input drive shaft would not rotate. Further examination established that the FCU input drive spool bearing had failed; however, the cause of the bearing failure could not be determined. Maintenance records indicated that the FCU was within the inspection and overhaul requirements recommended by the manufacturer.

Probable Cause: The total loss of engine power due to a failed fuel control unit bearing.

Accident investigation: