Sun Way Flight 4412 was an international scheduled cargo flight from

Karachi Karachi (; ur, ; ; ) is the most populous city in Pakistan and 12th most populous city in the world, with a population of over 20 million. It is situated at the southern tip of the country along the Arabian Sea coast. It is the former cap ...

, Pakistan, to

Khartoum Khartoum or Khartum ( ; ar, الخرطوم, Al-Khurṭūm, din, Kaartuɔ̈m) is the capital of Sudan. With a population of 5,274,321, its metropolitan area is the largest in Sudan. It is located at the confluence of the White Nile, flowing n ...

, Sudan. On 28 November 2010, the

Ilyushin Il-76 The Ilyushin Il-76 (russian: Илью́шин Ил-76; NATO reporting name: Candid) is a multi-purpose, fixed-wing, four-engine turbofan strategic airlifter designed by the Soviet Union's Ilyushin design bureau. It was first planned as a comm ...

operating the flight crashed while attempting to return to Karachi after one of the engines catastrophically failed shortly after take-off. Twelve people were killed in the crash: everyone on board the aircraft and four people on the ground. The engine failure was caused by metal fatigue resulting from operation of the engine beyond its design life.

Accident

Flight 4412 departed Karachi's

Jinnah International Airport Jinnah International Airport ( ur, جناح بین الاقوامی ہوائی اڈا) , formerly Drigh Road Airport or Karachi Civil Airport, is Pakistan's busiest international and domestic airport, and handled 7,267,582 passengers in 2017 ...

at 01:48 local time (20:48 UTC, 27 November) bound for

Khartoum International Airport Khartoum International Airport (Arabic:مطار الخرطوم الدولي) is the principal airport in Khartoum, the capital of Sudan. The current airport will be replaced by the New Khartoum International Airport in Omdourman 40 kilom ...

. The Ilyushin Il-76TD was carrying 31 tonnes of relief supplies for Sudan, reported to be a cargo of tents. The crew of eight was composed of Russian and Ukrainian members. Eyewitnesses saw that one of the starboard engines was on fire as the aircraft climbed out of Jinnah. It then crashed into buildings under construction at a housing complex for the

Pakistan Navy ur, ہمارے لیے اللّٰہ کافی ہے اور وہ بہترین کارساز ہے۔ English language, English: Allah is Sufficient for us - and what an excellent (reliable) Trustee (of affairs) is He!(''Quran, Qur'an, Al Imran, 3:173' ...

, setting several of them on fire, around from the end of the runway. Rescue authorities confirmed that four people were killed that were not on board the aircraft. The force of the explosion was so great that local residents thought that a bomb had exploded. The ground casualties were reported to be construction workers.

Aircraft

The aircraft involved was an Ilyushin Il-76TD with

Georgian Georgian may refer to: Common meanings * Anything related to, or originating from Georgia (country) ** Georgians, an indigenous Caucasian ethnic group ** Georgian language, a Kartvelian language spoken by Georgians **Georgian scripts, three scrip ...

registration 4L-GNI, that was being operated by Sun Way, a Georgian cargo airline. The aircraft was reported as having undergone a thorough technical inspection in the two weeks prior to the accident.

Victims

Investigation

The Civil Aviation Authority of Pakistan conducted an investigation into the accident. It emerged that the certified design life of the airframe and engines had expired in 2004, seven years before the accident, and that since then the aircraft had been operated without the manufacturer's approval. The weight of the Il-76 at take-off also exceeded by 5 tons the maximum allowed of 190 tons. The investigation determined that the accident sequence started with an uncontained failure of the second stage disk of the low-pressure

compressor A compressor is a mechanical device that increases the pressure of a gas by reducing its volume. An air compressor is a specific type of gas compressor. Compressors are similar to pumps: both increase the pressure on a fluid and both can transp ...

of engine number four, shortly after take-off. The failure was attributed to metal fatigue and was considered a direct result of the operation of the engine well past its design life. Debris ejected by the failed engine struck the right wing, damaging the flaps and piercing the fuel tanks. Fuel from the tanks ignited, further damaging the wing and flight controls to the extent that control of the aircraft could no longer be maintained. The aircraft then rolled out of control to the right and crashed to the ground.

Notes

References

{{Portal bar, Pakistan, Georgia (country), Aviation Aviation accidents and incidents in 2010 Aviation accidents and incidents in Pakistan 2010 in Pakistan Accidents and incidents involving the Ilyushin Il-76 Jinnah International Airport November 2010 events in Pakistan Airliner accidents and incidents involving uncontained engine failure