88 fatalities

1974-09-08: Boeing 707 (N8734) — Trans World Airlines - TWA — Ionian Sea, World

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 in the aft cargo compartment damaged the cabin floor and compromised the integrity of the elevator and rudder 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 1781231167Data APIEditorial standards
Boeing 707
Photo: USAF / Public domain, via Wikimedia Commons

A four-engine aircraft crashed into the Ionian Sea during a flight from Athens to Rome, resulting in no survivors among the 88 people on board.

What happened

On a scheduled flight from Athens-Ellinikon Airport to Rome, a four-engine airplane experienced a catastrophic loss of control while cruising at 28,000 feet. The aircraft was performing its final leg of a journey before an intended transatlantic crossing to New York. During the cruise phase, the plane entered a steep dive and impacted the Ionian Sea approximately 80 km west of Kefalonia Island, Greece.

Search efforts located various pieces of debris floating on the water's surface; however, there were no survivors among the 88 occupants on board the aircraft.

Findings

Investigations into the accident concluded that an explosive device detonated within the rear cargo area. This blast caused the cabin floor to buckle and sustain significant damage. The structural deformation resulted in the stretching or potential snapping of the control cables responsible for the rudder and elevator systems. The subsequent loss of stability in these control surfaces led to intense yawing and pitching, rendering the aircraft uncontrollable.

Probable cause

The detonation of an explosive in the aft cargo compartment damaged the cabin floor and compromised the integrity of the elevator and rudder control cables.