Incident Overview
Date: Thursday 7 May 1970
Aircraft Type: de Havilland Canada DHC-3 Otter
Owner/operator: Royal Canadian Air Force – RCAF
Registration Number: 9419
Location: near Montreal-St. Hubert CFB, QC (YHU) –
ÿ Canada
Phase of Flight: Take off
Status: Destroyed, written off
Casualties: Fatalities: 0 / Occupants: 4
Component Affected: Aircraft Flight Control System (specifically the float system and control linkages)Aircraft Flight Control System (specifically the float system and control linkages)
Category: Accident
A DHC-3 Otter, equipped with floats, experienced a sudden loss of control during a training mission on lakes. The aircraft initiated a cartwheel, resulting in inverted flight and submersion of the nose and cockpit.A DHC-3 Otter, equipped with floats, experienced a sudden loss of control during a training mission on lakes. The aircraft initiated a cartwheel, resulting in inverted flight and submersion of the nose and cockpit.
Description
The float-equipped DHC-3 Otter departed CFB St. Hubert, Montreal, Quebec on a training detail on some lakes in the area. The aircraft in what was an apparently normal take off just as the floats started to clear the water, the left wing started to rise and the right float dug into the water, bringing the opposite wing into contact with the water. The aircraft cartwheeled to the right, coming to rest inverted with the nose and cockpit submerged. Four on board evacuated without injury.
Primary Cause
Loss of control during a sudden change in flight conditions, potentially due to a combination of factors including float engagement and unexpected water conditions.Loss of control during a sudden change in flight conditions, potentially due to a combination of factors including float engagement and unexpected water conditions.Share on:
