Accident Sikorsky H-19-UH19D N6735, Tuesday 18 June 1991

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Date:	Tuesday 18 June 1991
Time:	08:30 LT
Type:	Sikorsky H-19-UH19D
Owner/operator:	Private
Registration:	N6735
MSN:	54-1416
Total airframe hrs:	3100 hours
Engine model:	WRIGHT R-1300
Fatalities:	Fatalities: 0 / Occupants: 1
Other fatalities:	0
Aircraft damage:	Substantial
Category:	Accident
Location:	Mcclusky, ND - United States of America
Phase:	Manoeuvring (airshow, firefighting, ag.ops.)
Nature:	Agricultural
Departure airport:
Destination airport:
Investigating agency:	NTSB
Confidence Rating:	Accident investigation report completed and information captured

Narrative:
PILOT WAS MAKING A SPRAY RUN ALONG A CANAL APPROXIMATELY 75 FEET BELOW GROUND LEVEL. HE BEGAN TO CLIMB OUT OF THE CANAL. HE LOST ALL POWER AS HE CLEARED THE CANAL EDGE AND MADE A HARD LANDING. THE MAIN ROTOR BLADES SEVERED THE TAIL BOOM ON LANDING. INVESTIGATION REVEALED A FAILURE OF THE BLOWER/SUPERCHARGER SEAL.

Probable Cause: FAILURE OF THE ENGINE BLOWER/SUPERCHARGER ASSEMBLY. A FACTOR RELATED TO THE ACCIDENT WAS: NO SUITABLE TERRAIN IN WHICH TO MAKE AN IMMEDIATE EMERGENCY LANDING.

Accident investigation: