Incident Overview

Date: Thursday 17 July 1975
Aircraft Type: de Havilland Canada CSR-123 Otter (DHC-3)
Owner/operator: Royal Canadian Air Force – RCAF
Registration Number: 9413
Location: Duke of York Bay, Southampton Island, NWT – ÿ Canada
Phase of Flight: Take off
Status: Destroyed, written off
Casualties: Fatalities: 0 / Occupants: 7
Component Affected: Aircraft control surfaces and aerodynamic stability.Aircraft control surfaces and aerodynamic stability.
Category: Accident
A small aircraft experienced a forced landing during an attempted takeoff from a sand bar in the Duke of York River. The pilot failed to adequately assess the available surface area before attempting take-off, resulting in the aircraft landing inverted in the river.A small aircraft experienced a forced landing during an attempted takeoff from a sand bar in the Duke of York River. The pilot failed to adequately assess the available surface area before attempting take-off, resulting in the aircraft landing inverted in the river.

Description

Flipped during attempted take-off from sand bar in Duke of York River and landed inverted in river. The investigation stated that the pilot did not determine the length of available surface before attempting taking off in unfavourable winds at near maximum weight. Investigation was hampered by escape of a number or recently caught fish into the river, preventing determination of aircraft weight at time of crash.

Source of Information

http://www.dhc-3archive.com/DHC-3_389.htmlhttp://www.dhc-3archive.com/DHC-3_389.html

Primary Cause

Insufficient assessment of surface area before takeoff due to unfavourable wind conditions and a lack of weight determination.Insufficient assessment of surface area before takeoff due to unfavourable wind conditions and a lack of weight determination.

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