1984-07-12: Lockheed C-141 Starlifter (64-0624) — United States Air Force - USAF (since 1947) — Sigonella NAS, Italy

9 fatalitiesSigonella NAS, ItalyTakeoff (climb)

An aircraft transporting paint cargo crashed shortly after takeoff following an engine explosion and subsequent loss of control, resulting in nine fatalities.

What happened

During the initial climb phase following departure, a catastrophic failure occurred involving the third engine. An explosion within the number three engine released significant debris, which struck the fourth engine and breached the aircraft's fuselage. This sequence of events led to a total loss of power in the fourth engine. Consequently, the aircraft entered a stall and descended into the ground, resulting in a massive explosion upon impact. There were nine fatalities among the occupants of the aircraft.

The flight was operating a route destined for Diego Garcia with a scheduled stop in Nairobi. The cargo on board consisted of various types of paint.

Findings

Investigations into the accident identified that a fire originated within the cargo area. This fire released highly toxic fumes derived from the paint cargo, which contained cyanide-based components. These toxic vapors caused the rapid asphyxiation of the crew, preventing them from managing the mechanical failures occurring in the engines.

Probable cause

The crew succumbed to toxic fumes from a cargo fire involving cyanide-containing paints, which preceded or coincided with engine failure.