Incident Overview

Date: Sunday 23 September 1962
Aircraft Type: Lockheed L-1049H Super Constellation
Owner/operator: Flying Tiger Line
Registration Number: N6923C
Location: 800 km W off Shannon, Ireland – ÿ Atlantic Ocean
Phase of Flight: En route
Status: Destroyed, written off
Casualties: Fatalities: 28 / Occupants: 76
Component Affected: Four enginesFour engines
Investigating Agency: CABCAB
Category: Accident
A Super Constellation aircraft experienced a catastrophic failure during a military charter flight from Gander to Frankfurt. A fire erupted in the third engine, leading to propeller feathering and subsequent shutdown. Subsequently, the aircraft oversped, resulting in a loss of control. The crew attempted to restart the engine, but it failed, forcing a ditching at sea. The left wing broke off, but the fuselage remained intact. The cabin filled rapidly with water, causing the aircraft to sink.A Super Constellation aircraft experienced a catastrophic failure during a military charter flight from Gander to Frankfurt. A fire erupted in the third engine, leading to propeller feathering and subsequent shutdown. Subsequently, the aircraft oversped, resulting in a loss of control. The crew attempted to restart the engine, but it failed, forcing a ditching at sea. The left wing broke off, but the fuselage remained intact. The cabin filled rapidly with water, causing the aircraft to sink.

Description

The Super Constellation departed Gander at 17:09 GMT for a military (MATS) charter flight to Frankfurt. Three hours later, at FL210 a fire developed in the no. 3 engine, which was shut down and the propeller feathered. The no. 1 engine oversped 5 minutes later when the flight engineer closed the no. 1 engine firewall shut-off valve in error. The crew were not able to restart the engine, and wanted to divert to Shannon with METO power on the no. 4 engine and reduced power on engine no. 2. The no. 2 engine lost power and finally failed, forcing the crew to carry out a ditching. The left wing broke off, but the fuselage remained intact. The cabin filled with water fast and the aircraft sank nose first in about 10 minutes. PROBABLE CAUSE: “The failure of two of the aircraft’s four engines, and improper action of the flight engineer which disabled a third engine thereby necessitating a ditching at sea.”

Primary Cause

Failure of two engines and improper action of the flight engineer, which disabled a third engine, necessitating a ditching at sea.Failure of two engines and improper action of the flight engineer, which disabled a third engine, necessitating a ditching at sea.

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