Turkish Airlines Flight 981 — A Cargo Door Opened, and 346 People Fell into a French Forest

On 3 March 1974, Turkish Airlines Flight 981, a McDonnell Douglas DC-10-10 registered TC-JAV, crashed into the Ermenonville Forest about 40 kilometres northeast of Paris, killing all 346 people aboard — 335 passengers and 11 crew. There were no survivors. For just over three years, until the Tenerife runway collision of March 1977, it was the deadliest accident in aviation history; it remains the deadliest single-aircraft crash with no survivors, the deadliest DC-10 accident, and the deadliest air disaster on French soil.

The aircraft had left Istanbul Yeşilköy on a scheduled service to London Heathrow with an intermediate stop at Paris Orly. At Orly some 50 passengers disembarked and roughly 216 boarded, many of them travellers rebooked from carriers grounded by a British European Airways strike, including a group of English rugby supporters returning from a France–England match at the Parc des Princes. The DC-10 departed Orly heavily loaded. Roughly nine minutes after takeoff, as it climbed through about 11,500 feet over the town of Meaux, the aft left cargo door tore away from the fuselage. The pressure differential between the cabin and the suddenly depressurised cargo hold — about 5.2 pounds per square inch — collapsed a section of the passenger floor above the door. Six occupied passenger seats and the floor beneath them were ejected through the open hatch. The collapsing floor severed the control cables and hydraulic lines that ran beneath it to the tail and the centre engine. The crew lost most pitch control and rudder authority. Seventy-seven seconds after the door failed, the aircraft struck the forest at high speed in a shallow dive.

The French Minister of Transport appointed a commission of inquiry by decree the following day; because the aircraft was American-built, the commission included United States participation. Its conclusion was a matter of design. The aft cargo door used an outward-opening, latch-over-the-pressure-vessel scheme whose locking mechanism could give the appearance of being secured when the latches were not fully driven home. The door could be — and on TC-JAV had been — closed in an unsafe state. The same fundamental flaw had already failed once in flight, over Windsor, Ontario, in 1972, without a catastrophic outcome; the warning had been documented inside the manufacturer in the 1969–1972 period, most famously in an internal memorandum by McDonnell Douglas engineer Dan Applegate. The fix that should have prevented Flight 981 had been ordered, recorded as completed, and not actually installed on this airframe.

No criminal conviction followed the crash, but the litigation that did — a mass civil action settled in 1975 — pried open the manufacturer’s records and forced the design history into public view. The disaster reshaped how regulators treat a known latent flaw: the door was redesigned across the DC-10 fleet by mandatory airworthiness directive, and the episode became a standing case study in the difference between issuing a recommendation and compelling a fix.