Accident de Havilland Canada DHC-6 Twin Otter 300 N74GC, Monday 29 June 1987

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Date:	Monday 29 June 1987
Time:	12:57 LT
Type:	de Havilland Canada DHC-6 Twin Otter 300
Owner/operator:	Grand Canyon Airlines, Inc.
Registration:	N74GC
MSN:	559
Year of manufacture:	1977
Total airframe hrs:	19408 hours
Engine model:	Pratt & Whitney Canada PT6A-27
Fatalities:	Fatalities: 0 / Occupants: 18
Other fatalities:	0
Aircraft damage:	Substantial
Category:	Accident
Location:	Grand Canyon, AZ - United States of America
Phase:	Taxi
Nature:	Unknown
Departure airport:
Destination airport:
Investigating agency:	NTSB
Confidence Rating:	Accident investigation report completed and information captured

Narrative:
WHILE TAXIING FOR TAKEOFF, THE UNDERSIDE OF THE LEFT WING STRUCK THE BOOM OF A BACKHOE PARKED ADJACENT TO THE AIRCRAFT RAMP. THE UNATTENDED BACKHOE WAS PARKED IN A DIRT AREA ADJACENT TO THE RAMP WITH THE BOOM IN THE EXTENDED POSITION WHILE THE OPERATOR WAS ON HIS LUNCH BREAK.

Probable Cause:

Accident investigation: