Incident Overview

Date: Wednesday 13 December 1950
Aircraft Type: Douglas DC-4-1009
Owner/operator: Swissair
Registration Number: HB-ILE
Location: Sydney Airport, NS (YQY) – ÿ Canada
Phase of Flight: Approach
Status: Destroyed, written off
Casualties: Fatalities: 0 / Occupants: 31
Component Affected: Left wing and flapLeft wing and flap
Category: Accident
A Swissair DC-4 aircraft experienced a catastrophic incident during a flight from Geneva to New York via Shannon and Gander. Due to severe weather at Gander, the aircraft diverted to Sydney. During descent, the aircraft descended too low, causing damage to approach light poles. The plane swung to the left, resulting in a left-wing-low attitude and a sheared wing. Subsequent fires destroyed the forward fuselage, and a second fire destroyed the left hand side. The incident was likely caused by the captain’s failure to maintain sufficient altitude to clear the approach light poles, leading to control loss and subsequent structural damage.A Swissair DC-4 aircraft experienced a catastrophic incident during a flight from Geneva to New York via Shannon and Gander. Due to severe weather at Gander, the aircraft diverted to Sydney. During descent, the aircraft descended too low, causing damage to approach light poles. The plane swung to the left, resulting in a left-wing-low attitude and a sheared wing. Subsequent fires destroyed the forward fuselage, and a second fire destroyed the left hand side. The incident was likely caused by the captain’s failure to maintain sufficient altitude to clear the approach light poles, leading to control loss and subsequent structural damage.

Description

The Swissair DC-4 had taken off from Geneva for a flight to New York via Shannon and Gander. Bad weather at Gander forced the crew to divert to Sydney. The aircraft descended too low on finals and struck a number of approach light poles. Full power was added, but no. 1 and 2 prop damage caused the plane to swing to the left. The DC-4 struck the ground in a left-wing-low attitude. The wing was sheared off. Small fires broke out on the left hand side, but were controlled by the crew. About 30 minutes later fire again broke out which destroyed the forward fuselage. PROBABLE CAUSE: “The impact of the aircraft with the ground while out of control due to failure on the part of the captain to maintain sufficient height to clear the approach light poles, three of which were struck by the aircraft. After striking the approach light poles, the captain and first officer were unable to maintain control of the aircraft due to the malfunctioning of numbers 1 and 2 engines and structural damage to the left wing and flap.”

Primary Cause

Captain’s failure to maintain sufficient altitude to clear approach light poles.Captain’s failure to maintain sufficient altitude to clear approach light poles.

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