88 fatalities

Four-Engine Aircraft Crash in the Ionian Sea (N8734)

Ionian Sea, WorldFlight

On September 8, 1974, a Boeing 707 (registration N8734) operated by Trans World Airlines - TWA was involved in an aviation accident near Ionian Sea, World in flight. 88 people were killed. Investigators recorded the probable cause as: The detonation of an explosive device in the aft cargo compartment buckled and damaged the cabin floor, stretching and possibly breaking one or more elevator and rudder system control cables. This summary draws on records from the Bureau of Aircraft Accidents Archives (B3A); 2 related events involving the same aircraft type or operator are linked below.

Sourcesthe Bureau of Aircraft Accidents Archives (B3A)Primary reportUpdated 2026-06-12Data APIEditorial standards
Boeing 707
Photo: USAF / Public domain, via Wikimedia Commons

A four-engine aircraft crashed into the Ionian Sea near Kefalonia, Greece, while en route to Rome. All 88 occupants were killed. The official investigation attributed the accident to an explosive device in the aft cargo compartment.

Incident Overview and Flight Details A four-engine aircraft departed Athens-Ellinikon Airport at 1112 local time on a scheduled flight to Rome. This segment was the final leg before the aircraft was to continue on a transatlantic flight to New York. The aircraft was cruising at an altitude of 28,000 feet when it lost control, entered a steep dive, and crashed into the Ionian Sea approximately 80 kilometers west of Kefalonia Island, Greece. ## Casualties and Debris No survivors were found among the 88 occupants on board. Some debris was recovered floating on the water's surface. ## Official Investigation Findings The official investigation determined that the detonation of an explosive device in the aft cargo compartment buckled and damaged the cabin floor. This damage stretched, and possibly broke, one or more control cables for the elevator and rudder systems. The resulting displacement of the control surfaces caused a violent pitch-up and yaw, rendering the aircraft uncontrollable.

Probable cause

The detonation of an explosive device in the aft cargo compartment buckled and damaged the cabin floor, stretching and possibly breaking one or more elevator and rudder system control cables. The resultant displacement of control surfaces caused a violent pitch up and yaw and made the aircraft uncontrollable.