On 15 March 1974, Sterling Airways Flight 901, a

Sud Aviation Caravelle The Sud Aviation SE 210 Caravelle is a French jet airliner produced by Sud Aviation. It was developed by SNCASE in the early 1950s, and made its maiden flight on May 27, 1955. It included some de Havilland designs and components developed for t ...

operated by

Sterling Airways Sterling Airlines A/S was a low-cost airline with its head office at Copenhagen Airport South in Dragør, Dragør Municipality, Denmark. It was created in September 2005 through the merger of two Danish airlines — Sterling European Airlin ...

, experienced a

landing gear Landing gear is the undercarriage of an aircraft or spacecraft that is used for taxiing, takeoff or landing. For aircraft, it is generally needed for all three of these. It was also formerly called ''alighting gear'' by some manufacturers, s ...

failure as it was

taxiing Taxiing (rarely spelled taxying) is the movement of an aircraft on the ground, under its own power, in contrast to towing or pushback (aviation), pushback where the aircraft is moved by a tug. The aircraft usually moves on wheels, but the term ...

for take-off. The right main landing gear collapsed, which caused the right wing to contact the runway, rupturing a fuel tank and igniting the spilt fuel. The fire killed 15 passengers and injured 37 passengers and crew. The aircraft had been chartered by tour company Tjæreborg to take tourists around Asia, and was on the way back to Copenhagen when the accident happened. The accident came only two years after the crash of Sterling Airways Flight 296.

Aircraft

The aircraft involved in the accident was a Sud Aviation SE-210 Caravelle 10B3,

registered Registered may refer to: * Registered mail, letters, packets or other postal documents considered valuable and in need of a chain of custody * Registered trademark symbol, symbol ® that provides notice that the preceding is a trademark or service ...

as OY-STK. The aircraft made its first flight in 4 April 1970 and was delivered to Sterling Airways on 6 May 1970.

Passengers and crew

The aircraft was carrying 96 people of which 92 were passengers, two were pilots and two were cabin crew. The captain was 38-year-old Leif Knud Jørgensen, who had been with Sterling Airways since 1967, a captain since 1970 and had 9,600 flying hours. The co-pilot was Raimo Uski from

Finland Finland, officially the Republic of Finland, is a Nordic country in Northern Europe. It borders Sweden to the northwest, Norway to the north, and Russia to the east, with the Gulf of Bothnia to the west and the Gulf of Finland to the south, ...

, who had 6,000 flying hours. The cabin crew consisted of 24-year-old Anne Bräuner and 22-year-old Bente Steffensen, both from Denmark. According to Danish newspaper ''

Politiken ''Politiken'' is a leading Danish daily broadsheet newspaper, published by JP/Politikens Hus in Copenhagen, Denmark. It was founded in 1884 and played a role in the formation of the Danish Social Liberal Party. Since 1970 it has been indepe ...

'', the nationalities of the passengers and crew were the following:

Accident

The Sud Aviation Caravelle had been chartered by travel agency Tjæreborg to take tourists on a tour around Asia. The tour had started in

Copenhagen Copenhagen ( ) is the capital and most populous city of Denmark, with a population of 1.4 million in the Urban area of Copenhagen, urban area. The city is situated on the islands of Zealand and Amager, separated from Malmö, Sweden, by the ...

on 2 March 1974 and had taken the tourists to several cities, among them

Shiraz Shiraz (; ) is the List of largest cities of Iran, fifth-most-populous city of Iran and the capital of Fars province, which has been historically known as Pars (Sasanian province), Pars () and Persis. As of the 2016 national census, the popu ...

Bangkok Bangkok, officially known in Thai language, Thai as Krung Thep Maha Nakhon and colloquially as Krung Thep, is the capital and most populous city of Thailand. The city occupies in the Chao Phraya River delta in central Thailand and has an estim ...

Hong Kong Hong Kong)., Legally Hong Kong, China in international treaties and organizations. is a special administrative region of China. With 7.5 million residents in a territory, Hong Kong is the fourth most densely populated region in the wor ...

and

New Delhi New Delhi (; ) is the Capital city, capital of India and a part of the Delhi, National Capital Territory of Delhi (NCT). New Delhi is the seat of all three branches of the Government of India, hosting the Rashtrapati Bhavan, New Parliament ...

. The tour, on its 14th day, was making a quick refuelling stop at Tehran, before flying back to Copenhagen. As the aircraft was taxiing to the runway, the right main landing gear suddenly collapsed, causing a fuel tank in the right wing to rupture and spill fuel which then ignited.

Investigation

Soon after news of the accident had reached Copenhagen, the Danish Accident Investigation Board dispatched a team to Tehran, along with technicians from the Danish police and experts in identifying bodies. The AIB team was to assist the Iranian investigation team. Before the investigation began it was suspected that either

metal fatigue In materials science, fatigue is the initiation and propagation of cracks in a material due to cyclic loading. Once a fatigue crack has initiated, it grows a small amount with each loading cycle, typically producing striation (fatigue), striati ...

or loss of hydraulics caused the accident. On the 30 March 1974 the AIB team released a statement stating that the probable cause of the accident was failure of the right main landing gear. As the landing gear was torn off, the fuel tank inside the wing ruptured, causing fuel to spill which then ignited. The accident report attributed the undercarriage collapse to a structural failure of the lower 'candelabra' fitting.

References

{{Aviation incidents and accidents in 1974 Accidents and incidents involving the Sud Aviation Caravelle Aviation accidents and incidents in 1974 Aviation accidents and incidents in Iran March 1974 in Asia 1974 in Iran Sterling Airlines accidents and incidents