XL Airways Germany A320 Flight 888T
Encyclopedia
XL Airways Germany Flight 888T was an Airbus A320
Airbus A320
The Airbus A320 family is a family of short- to medium-range, narrow-body, commercial passenger jet airliners manufactured by Airbus Industrie.Airbus was originally a consortium of European aerospace companies, and is now fully owned by EADS. Airbus's name has been Airbus SAS since 2001...

 which was seen to plunge into the Mediterranean Sea, 7 km off Saint-Cyprien
Saint-Cyprien
Saint-Cyprien is the name or part of the name of several places. Most of them are named after Cyprian:-Canada:* Saint-Cyprien, Bas-Saint-Laurent, Quebec, municipality in Bas-Saint-Laurent, Quebec...

 on the French coast, close to the Spanish border, in November 2008. The technical flight originated from Perpignan - Rivesaltes Airport, performed an overflight of Gaillac
Gaillac
Gaillac is a commune in the Tarn department in southern France.-Geography of Gaillac:Gaillac is a town situated between Toulouse, Albi and Monatauban. It has gained a large amount of recognition due to the wines that bear the towns name. The Tarn river runs along the border of the town by the...

 and was flying back to Perpignan Airport, doing an approach over the sea. This flight took place immediately following light maintenance and repainting to Air New Zealand
Air New Zealand
Air New Zealand Limited is the national airline and flag carrier of New Zealand. Based in Auckland, New Zealand, the airline operates scheduled passenger flights to 26 domestic destinations and 24 international destinations in 15 countries across Asia, Europe, North America and Oceania, and is...

 livery on the aircraft done at EAS Industries in preparation for a transfer of the plane between XL Airways Germany, which leased the aircraft, and Air New Zealand
Air New Zealand
Air New Zealand Limited is the national airline and flag carrier of New Zealand. Based in Auckland, New Zealand, the airline operates scheduled passenger flights to 26 domestic destinations and 24 international destinations in 15 countries across Asia, Europe, North America and Oceania, and is...

, the owner.

Seven people were aboard, two Germans (pilot and co-pilot from XL Airways) and five New Zealanders (one pilot, three aircraft engineers and one member of the Civil Aviation Authority of New Zealand
Civil Aviation Authority of New Zealand
The Civil Aviation Authority of New Zealand is the government agency tasked with establishing civil aviation safety and security standards in New Zealand....

). Two bodies were recovered within hours of the crash; the others were found during later weeks.

The extent of shattering of the wreckage indicated that the crash occurred at high speed.

The crash area was declared a crime scene
Crime scene
A crime scene is a location where an illegal act took place, and comprises the area from which most of the physical evidence is retrieved by trained law enforcement personnel, crime scene investigators or in rare circumstances, forensic scientists....

 and the French justice system opened a manslaughter
Manslaughter
Manslaughter is a legal term for the killing of a human being, in a manner considered by law as less culpable than murder. The distinction between murder and manslaughter is said to have first been made by the Ancient Athenian lawmaker Dracon in the 7th century BC.The law generally differentiates...

 investigation.

The aircraft had been overhauled by a local French company located at the Perpignan - Rivesaltes Airport prior to its return off lease.

Investigation

On 30 November 2008, divers recovered the second "black box" flight recorder and a third body, yet to be identified at the time. Although the cockpit voice recorder
Cockpit voice recorder
A cockpit voice recorder , often referred to as a "black box", is a flight recorder used to record the audio environment in the flight deck of an aircraft for the purpose of investigation of accidents and incidents...

 was damaged, experts said that there was a good probability of recovering data from it.

In late December, French investigators attempted to retrieve data from both black boxes, but the data could not be read. Usable data from the flight recorders was later recovered
Data recovery
Data recovery is the process of salvaging data from damaged, failed, corrupted, or inaccessible secondary storage media when it cannot be accessed normally. Often the data are being salvaged from storage media such as internal or external hard disk drives, solid-state drives , USB flash drive,...

 at the manufacturer's facility.

The investigators' interest focused on the Air Data Inertial Reference Unit
Air Data Inertial Reference Unit
An Air Data Inertial Reference Unit is a key component of the integrated Air Data Inertial Reference System , that supplies air data and inertial reference information to the pilots' Electronic Flight Instrument System displays as well as other systems on the aircraft such as the engines,...

 following recent similar Qantas incidents on A330s, exhibiting sudden uncommanded maneuvering (see: Qantas Flight 72
Qantas Flight 72
Qantas Flight 72 was a scheduled flight from Singapore Changi Airport to Perth Airport on 7 October 2008 that made an emergency landing at Learmonth airport near the town of Exmouth, Western Australia following an inflight accident featuring a pair of sudden uncommanded pitch-down manoeuvres that...

). The investigation was led by the Bureau d'Enquêtes et d'Analyses pour la sécurité de l'Aviation Civile
Bureau d'Enquêtes et d'Analyses pour la sécurité de l'Aviation Civile
The Bureau d'Enquêtes et d'Analyses pour la Sécurité de l'Aviation Civile is an agency of the French government, responsible for investigating aviation accidents and making safety recommendations based on what is learned from those investigations. It is headquartered in Building 153 on the grounds...

 (BEA), with the participation of its counterparts from the German Federal Bureau of Aircraft Accidents Investigation (BFU), the New Zealand Transport Accident Investigation Commission
Transport Accident Investigation Commission
The Transport Accident Investigation Commission is a transport safety body of New Zealand. It has its headquarters on the 16th floor of the AXA Centre in Wellington.It was established by Act of the Parliament of New Zealand on 1 September 1990...

 (TAIC), and the United States National Transportation Safety Board
National Transportation Safety Board
The National Transportation Safety Board is an independent U.S. government investigative agency responsible for civil transportation accident investigation. In this role, the NTSB investigates and reports on aviation accidents and incidents, certain types of highway crashes, ship and marine...

 (NTSB). Specialists from Airbus and from International Aero Engines
International Aero Engines
IAE International Aero Engines AG is a Zürich-registered joint venture manufacturing company formed in 1983.- Ownership :Current shareholders are:* Pratt & Whitney of the United States * MTU Aero Engines of Germany...

 (IAE), from XL Airways Germany, operator of the airplane and from Air New Zealand, the owner of the airplane, were associated with the work of the technical investigation.

Analysis of the data led to an interim finding that the crew lost control of the aircraft. While conducting a planned test of low-speed flight at low altitude, the aircraft was descending through 3000 feet on full autopilot for a go-around. Landing gear was just extended when at 15:44:30 UTC the speed dropped from 136 to 99 knots in 35 seconds. The stall warning sounded four times during violent maneuvering to regain control. By 15:46:00 the warning had silenced as the aircraft regained speed in a rapid descent, but six seconds later, at 263 knots, the aircraft had only 340 feet elevation and was 14 degrees nose down. A second later it was in the water.

In September 2010, the Bureau d'Enquêtes et d'Analyses pour la Sécurité de l'Aviation Civile published their final report into the accident. The primary cause was incorrect maintenance procedures which allowed water to enter the angle of attack
Angle of attack
Angle of attack is a term used in fluid dynamics to describe the angle between a reference line on a lifting body and the vector representing the relative motion between the lifting body and the fluid through which it is moving...

 (AOA) sensors. The water then froze in flight, rendering the sensors inoperative and thus removing the protection they provided from the aircraft's flight management system. When the crew attempted an improvised test of the AOA warning system (which was not functioning due to the blocked sensors) they reached loss of control. The crew was unaware that the AOA sensors were blocked, but they also disregarded the proper speed limits for the tests they were performing, thus reaching stall
Stall (flight)
In fluid dynamics, a stall is a reduction in the lift coefficient generated by a foil as angle of attack increases. This occurs when the critical angle of attack of the foil is exceeded...

. Five safety recommendations were made.

Date coincidence

The crash was highly publicised in New Zealand due to a date coincidence with another Air New Zealand crash. Due to differing time zones, the crash of Flight 888T occurred in the morning of 28 November New Zealand time - 29 years to the day after Air New Zealand Flight 901
Air New Zealand Flight 901
Air New Zealand Flight 901 was a scheduled Air New Zealand Antarctic sightseeing flight that operated between 1977 and 1979, from Auckland Airport to Antarctica and return via Christchurch...

 crashed into Mount Erebus
Mount Erebus
Mount Erebus in Antarctica is the southernmost historically active volcano on Earth, the second highest volcano in Antarctica , and the 6th highest ultra mountain on an island. With a summit elevation of , it is located on Ross Island, which is also home to three inactive volcanoes, notably Mount...

 in Antarctica, killing all 257 onboard.

External links

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