Incident Overview

Date: Sunday 30 April 1967
Aircraft Type: Douglas C-133B Cargomaster
Owner/operator: United States Air Force – USAF
Registration Number: 59-0534
Location: 5 km E off Okinawa – ÿ Japan
Phase of Flight: Approach
Status: Destroyed, written off
Casualties: Fatalities: 0 / Occupants: 9
Component Affected: PropellerPropeller
Category: Accident
A Douglas C-133B-DL Cargomaster transport plane crashed off the coast of Okinawa, Japan, after a propeller malfunction. All nine crew members survived. The plane turned back towards Kadena Air Base and experienced a catastrophic engine failure at 2500 feet, resulting in a half-wrecked impact.A Douglas C-133B-DL Cargomaster transport plane crashed off the coast of Okinawa, Japan, after a propeller malfunction. All nine crew members survived. The plane turned back towards Kadena Air Base and experienced a catastrophic engine failure at 2500 feet, resulting in a half-wrecked impact.

Description

A Douglas C-133B-DL Cargomaster transport plane en route from Okinawa to Midway Island, sank after ditching off shore from Okinawa, Japan. All nine crew members survived. After takeoff and climb to 12,450 feet, the number four propeller began to malfunction. The pilots shut the engine down, feathered the prop, and turned back toward Okinawa’s Kadena Air Base. While on approach the propeller control and propeller power circuit failed, causing a fixed pitch condition leading to engine flameout of all three remaining engines at 2500 feet. A ditching was carried out and the airplane broke in half.

Source of Information

http://www.airspacemag.com/military-aviation/the-curse-of-the-cargomaster-2241392/?page=4http://www.airspacemag.com/military-aviation/the-curse-of-the-cargomaster-2241392/?page=4

Primary Cause

Propeller malfunction leading to engine failure.Propeller malfunction leading to engine failure.

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