Incident Overview
Date: Monday 22 October 1962
Aircraft Type: Douglas DC-7CF
Owner/operator: Northwest Orient Airlines
Registration Number: N285
Location: off Biorka Island, AK –
ÿ United States of America
Phase of Flight: En route
Status: Destroyed, written off
Casualties: Fatalities: 0 / Occupants: 102
Component Affected: No. 2 engineNo. 2 engine
Investigating Agency: CABCAB
Category: Accident
A Northwest DC-7C flight from McChord AFB to Anchorage-Elmendorf AFB, AK, experienced a loss of power and uncontrollable overspeeding of the second engine, resulting in a ditching in Sitka Sound. All 102 passengers were evacuated via life rafts.A Northwest DC-7C flight from McChord AFB to Anchorage-Elmendorf AFB, AK, experienced a loss of power and uncontrollable overspeeding of the second engine, resulting in a ditching in Sitka Sound. All 102 passengers were evacuated via life rafts.
Description
The DC-7C, owned by Northwest, was operating on a Military Air Transport Charter flight 293 from McChord AFB to Anchorage-Elmendorf AFB, AK. The plane took off at 08:58. Three hours later, at FL200, a loss of power on the no. 2 engine was experienced en route, followed by an uncontrollable overspeeding of the no. 2 propeller. A ditching seemed inevitable and a descend to 500 feet was carried out and the aircraft then ditched in Sitka Sound, AK at 12:52 at a speed of 176 km/h. The DC-7 stayed afloat for 24 minutes. All 102 persons on board were evacuated using life rafts. PROBABLE CAUSE: “An uncontrollable overspeeding propeller due to failure in the blower section of the No.2 engine.”
Primary Cause
Uncontrolled overspeeding of the no. 2 engine due to a failure in the blower section of the No.2 engine.Uncontrolled overspeeding of the no. 2 engine due to a failure in the blower section of the No.2 engine.Share on:
