Incident Overview

Date: Thursday 3 October 1968
Aircraft Type: de Havilland Canada C-7B Caribou (DHC-4)
Owner/operator: United States Air Force – USAF
Registration Number: 63-9753
Location: near Camp Evans – ÿ Vietnam
Phase of Flight: Initial climb
Status: Destroyed, written off
Casualties: Fatalities: 13 / Occupants: 13
Component Affected: Chinook helicopter rotor blades.Chinook helicopter rotor blades.
Category: Accident
A Caribou aircraft experienced a catastrophic crash while carrying nine US Army passengers and a crew, following a collision with a CH-47A Chinook helicopter. The Chinook, approaching Camp Evans, initiated a climbing right hand turn, resulting in a blade strike on the Caribou’s cockpit and engine. The Chinook’s rotor separation caused further control loss, leading to a crash.A Caribou aircraft experienced a catastrophic crash while carrying nine US Army passengers and a crew, following a collision with a CH-47A Chinook helicopter. The Chinook, approaching Camp Evans, initiated a climbing right hand turn, resulting in a blade strike on the Caribou’s cockpit and engine. The Chinook’s rotor separation caused further control loss, leading to a crash.

Description

The Caribou took off from Camp Evans, carrying nine US Army passengers and a crew of four. The pilot made a climbing right hand turn. At the same time, a CH-47A Chinook helicopter (66-19041) was approaching Camp Evans from LZ Nancy. It carried troops and mail to Camp Evans. At an altitude of 1100 feet, one of the Chinook’s rotor blades sliced through the Caribou’s cockpit and another blade hit the no. 1 engine. The Caribou lost control and crashed. The Chinook’s rear rotor separated, striking the helicopter’s fuselage causing it to lose control and crash.

Source of Information

http://www.dhc4and5.org/, http://www.c-7acaribou.com/http://www.dhc4and5.org/, http://www.c-7acaribou.com/

Primary Cause

Blade strike on the Caribou’s cockpit and engine by a Chinook rotor blade.Blade strike on the Caribou’s cockpit and engine by a Chinook rotor blade.

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