Thursday, May 4, 2017

Malaysia Airlines Flight 370

Malaysia Airlines Flight 370

Malaysia Airlines Flight 370

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Malaysia Airlines Flight 370 (MH370/MAS370) was a scheduled international passenger flight that disappeared on 8 March 2014 while flying from Kuala Lumpur International Airport, Malaysia, to Beijing Capital International Airport in China. The aircraft, a Boeing 777-200ER operated by Malaysia Airlines, last made voice contact with air traffic control at 01:19 MYT, 8 March (17:19 UTC, 7 March) when it was over the South China Sea, less than an hour after takeoff. The aircraft disappeared from air traffic controllers' radar screens at 01:22 MYT. Malaysian military radar continued to track the aircraft as it deviated westwards from its planned flight path and crossed the Malay Peninsula. It left the range of Malaysian military radar at 02:22 while over the Andaman Sea, 200 nautical miles (370 km) north-west of Penang in north-western Malaysia. The aircraft was carrying 12 Malaysian crew members and 227 passengers from 15 nations.

The multinational search effort for the aircraft is the largest and most expensive in aviation history. The search began in the Gulf of Thailand and the South China Sea, where the aircraft's signal was last detected on secondary surveillance radar, and was soon extended to the Strait of Malacca and Andaman Sea. Analysis of satellite communications between the aircraft and Inmarsat's satellite communications network concluded that the flight continued until at least 08:19 and flew south into the southern Indian Ocean, although the precise location cannot be determined. Australia took charge of the search on 17 March when the search moved to the southern Indian Ocean. On 24 March, the Malaysian government noted that the final location determined by the satellite communication is far from any possible landing sites, and concluded that "Flight MH370 ended in the southern Indian Ocean." From October 2014 through January 2017, a comprehensive survey of 120,000 km2 (46,000 sq mi) of sea floor about 1,800 km (1,100 mi) south-west of Perth, Western Australia, yielded no evidence of the aircraft. Several pieces of marine debris found on the coast of Africa and on Indian Ocean islands off the coast of Africa, the first discovered on 29 July 2015 on Réunion, have been confirmed as pieces of Flight 370. However, the bulk of the aircraft has still not been located, prompting many theories about its disappearance. Malaysia established the Joint Investigation Team (JIT) to investigate the incident, working with foreign aviation authorities and experts. Malaysia has stated that a final report on Flight 370 will be released by the end of 2017. Neither the crew nor the aircraft's communication systems relayed a distress signal, indications of bad weather, or technical problems before the aircraft vanished. Two passengers travelling on stolen passports were investigated, but eliminated as suspects. Malaysian police have identified the captain as the prime suspect if human intervention was the cause of the disappearance, after clearing all others on the flight of suspicious motives. Power was lost to the aircraft's satellite data unit (SDU) at some point between 01:07 and 02:03; the SDU logged onto Inmarsat's satellite communication network at 02:25—three minutes after the aircraft left the range of radar. Based on analysis of the satellite communications, the aircraft turned south after passing north of Sumatra and the flight continued for five hours with little deviation in its track, ending when its fuel was exhausted.

With the presumed loss of all on board, Flight 370 is the second deadliest incident involving a Boeing 777 and the second deadliest incident in Malaysia Airlines' history, behind Flight 17 in both categories. Malaysia Airlines was struggling financially, a problem that was exacerbated by a decline in ticket sales after the disappearance of Flight 370 and the crash of Flight 17; the airline was re-nationalised by the end of 2014. The Malaysian government received significant criticism, especially from China, for failing to disclose information promptly during the early weeks of the search. Flight 370's disappearance brought to public attention the limits of aircraft tracking and flight recorders, including several issues raised four years earlier—but never mandated—following the loss of Air France Flight 447. In response to Flight 370's disappearance, the International Civil Aviation Organization (ICAO) adopted new standards for aircraft position reporting over open ocean, extended recording time for cockpit voice recorders, and, from 2020, will require new aircraft designs to have a means to recover the flight recorders, or the information they contain, before the recorders sink below water.


Passengers

Of the 227 passengers, 152 were Chinese citizens, including a group of 19 artists with six family members and four staff returning from a calligraphy exhibition of their work in Kuala Lumpur; 38 passengers were Malaysian. The remaining passengers were from 13 different countries. Twenty passengers—12 of whom were from Malaysia and eight from China—were employees of Freescale Semiconductor.

Under a 2007 agreement with Malaysia Airlines, Tzu Chi—an international Buddhist organisation—immediately sent specially trained teams to Beijing and Malaysia to give emotional support to passengers' families. The airline also sent its own team of caregivers and volunteers and agreed to bear the expense of bringing family members of the passengers to Kuala Lumpur and providing them with accommodation, medical care, and counselling. Altogether, 115 family members of the Chinese passengers flew to Kuala Lumpur. Some other family members chose to remain in China, fearing they would feel too isolated in Malaysia.


Response by air traffic control

At 01:38 MYT, Ho Chi Minh Area Control Centre (ACC) contacted Kuala Lumpur Area Control Centre to query the whereabouts of Flight 370 and informed them that they had not established verbal contact with Flight 370, which was last detected by radar at waypoint BITOD. The two centres exchanged four more calls over the next 20 minutes with no new information.

At 02:03, Kuala Lumpur ACC relayed to Ho Chi Minh ACC information received from Malaysia Airlines' operations centre that Flight 370 was in Cambodian airspace. Ho Chi Minh ACC contacted Kuala Lumpur ACC twice in the following eight minutes asking for confirmation that Flight 370 was in Cambodian airspace. At 02:15, the watch supervisor at Kuala Lumpur ACC queried Malaysia Airlines' operations centre, which said that it could exchange signals with Flight 370 and that Flight 370 was in Cambodian airspace. Kuala Lumpur ACC contacted Ho Chi Minh ACC to ask whether the planned flight path for Flight 370 passed through Cambodian airspace. Ho Chi Minh ACC responded that Flight 370 was not supposed to enter Cambodian airspace and that they had already contacted Phnom Penh ACC (which controls Cambodian airspace), which had no contact with Flight 370. Kuala Lumpur ACC contacted Malaysia Airlines' operations centre at 02:34, inquiring about the communication status with Flight 370, and were informed that Flight 370 was in a normal condition based on a signal download and that it was located at 14°54′00″N 109°15′00″E. Later, another Malaysia Airlines aircraft (Flight 386 bound for Shanghai) attempted, at the request of Ho Chi Minh ACC, to contact Flight 370 on the Lumpur Radar frequency—the frequency on which Flight 370 last made contact with Malaysian air traffic control—and on emergency frequencies. The attempt was unsuccessful.

At 03:30, Malaysia Airlines' operations centre informed Kuala Lumpur ACC that the locations it had provided earlier were "based on flight projection and not reliable for aircraft positioning." Over the next hour, Kuala Lumpur ACC contacted Ho Chi Minh ACC asking whether they had contacted Chinese air traffic control. At 05:09, Singapore ACC was queried for information about Flight 370. At 05:20, an undisclosed official—identified in the preliminary report released by Malaysia as "Capt [name redacted]"—contacted Kuala Lumpur ACC requesting information about Flight 370; he opined that, based on known information, "MH370 never left Malaysian airspace."

The watch supervisor at Kuala Lumpur ACC activated the Kuala Lumpur Aeronautical Rescue Coordination Centre (ARCC) at 05:30, over four hours after communication was lost with Flight 370. The ARCC is a command post at an Area Control Centre that coordinates search-and-rescue activities when an aircraft is lost.






Incident summary
Date 8 March 2014
Summary Cause unknown, search halted since 17 January 2017, some debris found
Site Southern Indian Ocean
Passengers 227
Crew 12
Fatalities 239 (all)
Survivors 0
Aircraft type Boeing 777-200ER
Operator Malaysia Airlines
Registration 9M-MRO
Flight origin Kuala Lumpur International Airport, Kuala Lumpur, Malaysia
Destination Beijing Capital International Airport, Beijing, China


Air Crash Investigation

Saturday, April 15, 2017

Air Services HS 748

Air Services HS 748

Air Services HS 748

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On 17 February 2014, a 748 Air Services Hawker Siddeley HS 748 performing a humanitarian cargo flight from Juba International Airport to Bentiu Airport, South Sudan crash-landed at Bentiu, killing one of four occupants.


Incident

The flight was operating an humanitarian aid cargo flight from Juba to Bentiu during the South Sudanese conflict. The aircraft was on approach to land at Bentiu Airport when it crash-landed. The plane touched down too fast, causing it to veer off the runway, run across a ditch and strike two parked vehicles. As a result, the aircraft broke up and shortly afterwards caught fire. One crew member died and three others on board were injured. This was the first commercial aviation accident in South Sudan since the country became independent in 2011. A witness on the ground reported that the aircraft was attempting an unstabilized approach at high speed. The crash resulted in hull loss.




Incident summary
Date 17 February 2014
Summary Crash-landed
Site Bentiu, South Sudan
Crew 4
Fatalities 1
Survivors 3
Aircraft type Hawker Siddeley HS 748
Operator 748 Air Services
Registration 5Y-HAJ
Flight origin Juba International Airport, Juba
Destination Bentiu Airport, Bentiu


Air Crash Investigation

Algerian Air Force C-130

Algerian Air Force C-130

Algerian Air Force C-130

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On 11 February 2014, an Algerian Air Force Lockheed C-130H-30 Hercules aircraft crashed into Djebel Fertas mountain near Aïn Kercha, Oum El Bouaghi Province, Algeria; with 74 passengers and 4 crew on board. Seventy-seven bodies were discovered at the site, along with one survivor.

Preliminary reports suggest that bad weather conditions might have caused the crash. Eyewitness accounts describe the aircraft clipping a mountain before crashing.[6] This was the first reported air disaster in Algeria since the 2003 crash of Air Algérie Flight 6289. The accident is undergoing investigation.


Crash

An Algerian Air Force Lockheed C-130 Hercules aircraft crashed into Djebel Fertas mountain near Aïn Kercha, Oum El Bouaghi Province, killing 77 people and leaving one survivor. The passengers included soldiers and members of their families. Contact with the aircraft was reportedly lost between Constantine and Oum El Bouaghi just before noon and air traffic controllers dispatched helicopters to search for it. The sole survivor, a soldier, was taken to a military hospital in Constantine due to injuries from head trauma. The initial casualty count indicated 103 deaths, but was later revised by the government manifest list.


Investigation

Recovery teams located one of the two flight recorders, according to El Watan. Emergency services had recovered 76 bodies from the site.


Incident summary
Date 11 February 2014
Summary Under investigation
Site Near Aïn Kercha, Oum El Bouaghi Province, Algeria
Passengers 74
Crew 4
Fatalities 77
Survivors 1
Aircraft type Lockheed C-130 Hercules
Operator Algerian Air Force
Registration 7T-WHM
Flight origin Tamanrasset, Algeria
Destination Constantine, Algeria


Air Crash Investigation

Friday, April 14, 2017

Romania Britten-Norman Islander

Romania Britten-Norman Islander

Romania Britten-Norman Islander

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On 20 January 2014, a Britten-Norman Islander light aircraft belonging to the Superior School of Aviation in Romania (Romanian: Școala Superioară de Aviație Civilă) crashed in the Apuseni Mountains at an altitude of approximately 1,400 metres (4,600 ft), near the village of Petreasa, between Alba and Cluj counties. The aircraft was piloted by two crew and was transporting a five-person medical team from Bucharest to Oradea. The pilot and a medical student died, while the copilot and four medical doctors were injured.


Accident

The aircraft, property of the Superior School of Civil Aviation in Romania, took off at 13:35 from Aurel Vlaicu International Airport in Bucharest and was bound for Oradea International Airport, where it should have landed at 16:35. The flight was a humanitarian mission and was crewed by a 55-year-old with 16,000 hours flying experience and a copilot. On board were a doctor from Fundeni Hospital, one from Elias Hospital, one from Saint Mary Hospital, another from a hospital in Beiuș, and a student at the Military Medical School in Bucharest. The team were to collect organs from a donor for a transplant operation.

The accident happened in poor weather conditions and the crew was flying according to instrument flight rules. One of the passengers reported the crash at 16:16 in a telephone call to the 112 emergency service. The Inspectorate for Emergency Situations Alba, part of Romanian General Inspectorate for Emergency Situations and the team of Salvamont Cluj was assigned to the rescue operation. The rescue team had difficulty finding the crash site, they did not know the precise location and the area was covered in snow and thick fog. Because of the fog, the SMURD helicopter from Mureș could not be used. Over 70 firefighters and policemen from the counties of Cluj, Bihor and Alba and approximately 200 locals took part in the search for the wreck.

The pilot and the student died and the copilot was in a critical state, three of the doctors had multiple bone fractures and one had no severe wounds. All injured were taken to the Emergency Hospital in Cluj (Spitalul Clinic Județean de Urgență Cluj) and were admitted to the Intensive Care Unit.


Investigation

The Romanian Government announced the start of two investigations. The first would look at the accident and the second the procedures followed by the rescue teams, which reached the scene only several hours after the crash.

In a preliminary investigation report, the Center for Investigation and Analysis for Civil Aviation Security (Romanian: Centrul de Investigații și Analiză pentru Siguranța Aviației Civile) (CIAS) said that the ELT distress beacon was type ARTEX C406-2. This beacon transmitting on frequencies 121.5 MHz, 243 MHz (now obsolete) and 406 MHz, using two different cables for antennas. The cable for 406 MHz antenna was not found at the crash scene, which explains why no signal received on 406 MHz.




Incident summary
Date 20 January 2014
Summary Under investigation
Site Petreasa, Horea, Alba County, Romania
Passengers 5
Crew 2
Fatalities 2
Injuries (non-fatal) 5
Survivors 5
Aircraft type Britten-Norman BN-2A-27 Islander
Registration YR-BNP
Flight origin Bucharest, Romania
Destination Oradea, Bihor County


Air Crash Investigation

2014 Accident

2014 Accident

2014 Accident

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Air Crash Investigation

LAM Mozambique Airlines Flight 470

LAM Mozambique Airlines Flight 470

LAM Mozambique Airlines Flight 470

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LAM Mozambique Airlines Flight 470 (TM470/LAM470) was a scheduled international passenger flight from Maputo International Airport, Mozambique that crashed on 29 November 2013 into the Bwabwata National Park in Namibia en route to Quatro de Fevereiro Airport, Angola. The aircraft operating the flight, an Embraer 190, departed Maputo at 11:26 CAT (09:26 UTC) and was due to land at 14:10 WAT (13:10 UTC), but failed to arrive at its destination. The wreckage of the aircraft was found the following day on 30 November 2013 at the Bwabwata National Park in northern Namibia, halfway between its departure and scheduled arrival airport. All 27 passengers and 6 crew members were killed. Preliminary findings of the Mozambican Civil Aviation Institute (IACM) showed that the pilot intentionally crashed the jet. The Mozambican Association of Air Operators (AMOPAR) disputes the conclusion of the IACM. The Directorate of Aircraft Accident Investigations Namibia stated that the pilot inputting controls leading to the crash was the probable cause of the aviation accident.

It was the first fatal incident for LAM Mozambique Airlines since 1970, and the deadliest for a Mozambican airline since the Mozambican presidential Tupolev Tu-134A-3 aircraft carrying President Samora Machel crashed in 1986


Investigation

On 21 December 2013, the Mozambican Civil Aviation Institute (Instituto Moçambicano de Aviação Civil, IACM) head João Abreu presented the preliminary investigation report, according to which Captain Herminio dos Santos Fernandes had a "clear intention" to crash the jet and manually changed its autopilot settings, making this a suicide by pilot. The aircraft's intended altitude was reportedly changed three times from 38,000 feet (11,582 m) to 592 feet (180 m), the latter being below ground level, and the speed was manually adjusted as well. The cockpit voice recorder captured several alarms going off during the descent, as well as repeated loud bangs on the door from the co-pilot, who was locked out of the cockpit. Contrary to regulations by Mozambique Airlines, no cabin crew member was deployed in the cockpit during the time of the co-pilot's absence.

Investigations of the aircraft's pilot revealed that 49-year old Captain Fernandes had suffered a number of blows of fate prior to the accident. His son died in a suspected suicide in November 2012; Fernandes stayed away from the funeral. His daughter was in hospital for heart surgery at the time of the crash, and his divorce proceedings were unresolved for over a decade.

Despite the conclusion of the IACM, the Mozambican Association of Air Operators (AMOPAR) disputed the preliminary report, explaining that the maneuvers of Captain Fernandes were from the manual of standard operating procedures issued by Embraer (the manufacturer of the crashed aircraft) about how to "act in emergency situation to avert disaster". According to the AMOPAR document, the Mozambican Government had not complied with the standards and recommendations of the International Civil Aviation Organization (ICAO) "about the disclosure, contents and procedures relating to the preliminary report of the investigation of the crash of flight TM 470." On 15 April 2016 the DAAI released its final report finding that the inputs to the auto flight systems by the person believed to be the Captain, who remained alone on the flight deck when the person believed to be the co-pilot requested to go to the lavatory, caused the aircraft to depart from cruise flight, transition to a sustained controlled descent and subsequently crash.




Incident summary
Date 29 November 2013
Summary Deliberate crash and suicide by pilot
Site Bwabwata National Park, Namibia
Passengers 27
Crew 6
Fatalities 33
Survivors 0
Aircraft type Embraer 190
Operator LAM Mozambique Airlines
Registration C9-EMC
Flight origin Maputo International Airport, Maputo, Mozambique
Destination Quatro de Fevereiro Airport, Luanda, Angola


Air Crash Investigation

Tatarstan Airlines Flight 363

Tatarstan Airlines Flight 363

Tatarstan Airlines Flight 363

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Tatarstan Airlines Flight 363 was a scheduled domestic passenger flight, operated by Tatarstan Airlines on behalf of Ak Bars Aero, from Moscow to Kazan, Russia. On 17 November 2013, at 19:24 local time (UTC+4), the Boeing 737-500 crashed during an aborted landing in Kazan International Airport, killing all 44 passengers and 6 crew members on board.

According to the official investigation report, the crash was a result of pilot error, arising from a lack of skill to recover from an excessive nose-up attitude during a go-around procedure. The pilots’ deficiencies were caused by a deficiency in the airline's safety management and a lack of regulatory oversight. One member of the commission filed an alternative opinion report, however, claiming that the commission had ignored the possible malfunction of the aircraft's elevators' controls.


Investigation

The Interstate Aviation Committee (IAC) launched an investigation into the crash and arrived at the site on 18 November. Both flight recorders, the flight data recorder (FDR) and the cockpit voice recorder (CVR), were recovered from the wreckage. The Tatarstan Transport Prosecution Office has opened a criminal investigation into the crash. The American National Transportation Safety Board (NTSB) dispatched a team of investigators to the crash site.

On 19 November, Aksan Giniyatullin, the director of Tatarstan Airlines, declared that although the cockpit crew was experienced, the captain of the airliner may have lacked experience performing a go-around maneuver. Moments before the crash the pilot informed the control tower that the aircraft was not properly configured for landing and initiated a go-around, before plunging into the ground as if it had stalled. Investigators said the possible causes of the accident included technical malfunction as well as pilot error. On 22 November the British Air Accidents Investigation Branch announced they had joined the investigation and had dispatched investigators to Kazan.


Offical report

On 19 November 2013, the Investigation Board of IAC reported the following preliminary details after recovering some information from the flight data recorder: Tatarstan Airlines Boeing 737-500 Accident Technical Investigation Board of IAC informs about preliminary results of flight data recorder information recovery. During the final approach the flight crew were unable to follow a standard landing pattern defined by the regulating documentation. Having considered the aircraft is not lined-up properly relative to the runway, the crew reported to the ATC and started to go-around using the TOGA (Take Off / Go Around) mode. One of the two autopilots, which was active during the final approach, has been switched off and the flight was being controlled manually. The engines reached thrust level close to full. The crew retracted the flaps from 30 degrees to 15 degrees position. Affected by the upturn moment generated by the engine thrust, the aircraft started to climb, reaching the pitch angle of about 25 degrees. Indicated airspeed has started to decrease. The crew retracted the landing gear. Since initiating the go-around maneuver up to this moment the crew did not perform control actions through the yoke. After the airspeed decreased from 150 to 125 knots, the crew started control actions through the yoke, pitching nose down, which has led to stopping climb then starting descent and increase of the airspeed. Maximum angles of attack have not exceeded operational limits during the flight.

After reaching the altitude of 700 meters, the aircraft started a steep nosedive, with the pitch angle reaching −75° by the end of the flight (end of the recording). The aircraft collided with terrain at high speed (exceeding 450 km/h) and with highly negative pitch angle. About 45 seconds have passed between the moment of starting go-around maneuver and the moment the recording stopped, the descent took about 20 seconds. The propulsion systems were operating up to the collision with terrain. No single commands have been detected by the preliminary analysis, which would indicate failures of systems or units of the aircraft or engines. On 24 December 2015, the Interstate Aviation Committee released their final report stating that the crash was caused by an under-qualified crew who lacked the skills to recover from an excessive nose up attitude during a go-around procedure. The go-around was necessitated by a positional error in the navigation system, a map drift. The pilots’ deficiencies were caused by lack of airline safety management and lack of regulators’ oversight.

According to the final report, during the final approach the crew initiated a go-around, but being under high workload, which possibly caused a "tunnel vision effect", they did not perceive warning messages related to auto-pilot disconnection. When the plane climbed to 700 m, its pitch angle reached 25 degrees and the airspeed dropped to 230 km/h. At that moment the captain, who never performed a go-around before, apart from the training, moved the yoke, pitching nose down, which led to stopping climb and started descent and increase of the aircraft's airspeed. After reaching the altitude of 700 m, the aircraft started a steep nosedive, with the pitch angle reaching −75° when the aircraft impacted the ground. The plane crashed on the airport's runway with a speed exceeding 450 km/h. The time from the start of the go-around maneuver until the impact was about 45 seconds, including 20 seconds of aircraft descent.




Incident summary
Date 17 November 2013
Summary Pilot error on landing
Site Kazan International Airport, Kazan, Tatarstan, Russia
Passengers 44/td>
Crew 6/td>
Fatalities 50td>
Survivors 0
Aircraft type Boeing 737-53A
Operator Tatarstan Airlines
Registration VQ-BBN
Flight origin Domodedovo International Airport, Moscow Oblast
Destination Kazan International Airport, Kazan, Tatarstan, Russia


Air Crash Investigation

Thursday, April 13, 2017

Lao Airlines Flight 301

Lao Airlines Flight 301

Lao Airlines Flight 301

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Lao Airlines Flight 301 was a scheduled domestic passenger flight from Vientiane to Pakse, Laos. On 16 October 2013, the ATR 72–600 aircraft operating the flight crashed into the Mekong River in Pakse, killing all 49 people on board. The accident, the first involving an ATR 72–600, was the deadliest ever to occur on Laotian soil and the third-deadliest involving an ATR 72 behind Aero Caribbean Flight 883 and American Eagle Flight 4184, which both killed 68. It was also the first fatal accident for Lao Airlines since 2000. The investigation report suggests pilot error as the probable cause. The accident was the second-deadliest aviation incident in 2013, behind Tatarstan Airlines Flight 363.


Accident

The aircraft was operating a scheduled domestic passenger flight from Wattay International Airport, Vientiane to Pakse International Airport, Pakse, Laos. The flight departed from Vientiane at 14:45 local time (07:45 UTC) and crashed into the Mekong River at 15:55 local time (08:55 UTC) while approaching Pakse for the second time, less than 6 kilometres (3.7 mi) from the airport. The aircraft had already gone around once due to poor weather and was in the downwind leg for another approach when the aircraft impacted the nearby river.

There were five crew and 44 passengers on board, all of whom are presumed to have died upon impact. Marks on the ground indicated that the aircraft landed heavily on the ground before entering the Mekong. The weather was reported to be poor at the time of the accident due to the remnants of Typhoon Nari affecting southern Laos.

Recovery of the victims and wreckage was hampered by the fast-flowing, deep waters of the Mekong. To assist with the search, 50 divers from Thailand were brought in. Eighteen of the victims had been recovered as of 18 October. By 23 October 44 of the 49 victims had been recovered. Identification had been confirmed for 27 of them. Some of the victims were found 19 kilometres (12 mi) downstream of the crash site.


Investigation

The Laotian Department of Civil Aviation opened an investigation into the accident. The aircraft's manufacturer ATR and the French Bureau d'Enquêtes et d'Analyses pour la Sécurité de l'Aviation Civile (BEA) are assisting them. The BEA sent four investigators to Laos.

The wreckage of the aircraft was lifted from the Mekong on 22 October 2013. More than two weeks after the accident, on 31 October 2013, the Cockpit Voice Recorder was successfully recovered from the Mekong. The Flight Data Recorder was recovered two days later on 2 November.

According to the official investigation report, released on 28 November 2014, the probable cause of the accident was the flight crew's failure to properly execute the published missed approach procedure, which resulted in the aircraft impacting terrain. A sudden change of weather conditions and an improperly executed published instrument approach necessitated the go-around. The recordings show that the flight crew initiated a right turn according to the lateral missed approach trajectory without succeeding in reaching the vertical trajectory. Specifically, the flight crew didn't follow the vertical profile of missed approach as the missed approach altitude was set at 600 ft and the aircraft system went into altitude capture mode. When the flight crew realized that the altitude was too close to the ground, the PF over-reacted, which led to a high pitch attitude of 33°. It then impacted trees. The fuselage struck the bank and plunged into the river.




Incident summary
Date 16 October 2013
Summary Pilot error, controlled flight into terrain
Site Done Kho Island, Mekong River, Pakse, Laos
Passengers 44
Crew 5
Fatalities 49
Survivors 0
Aircraft type ATR 72–600
Operator Lao Airlines
Registration RDPL-34233
Flight origin Wattay International Airport, Vientiane, Laos
Destination Pakse International Airport, Laos


Air Crash Investigation

CHC Helicopters Eurocopter AS332

CHC Helicopters Eurocopter AS332

CHC Helicopters Eurocopter AS332

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The 2013 CHC Helicopter Eurocopter AS332 crash involved a Eurocopter AS332L2 Super Puma Mk 2 (G-WNSB) belonging to CHC Helicopters that crashed into the sea 2 nm from Sumburgh in the Shetland Islands, Scotland while en route from Borgsten Dolphin oil platform. The accident killed four of the passengers; 12 other passengers and two crew were rescued. An investigation by the UK's Air Accident Investigation Branch is ongoing.


Accident

The helicopter was on an otherwise normal approach to Sumburgh Airport, when at 18:17–18:20 local time, the aircraft lost contact with air traffic control. No mayday was sent out by the pilots as they attempted to make a controlled ditching into the North Sea, 1.5-2 nm west from Sumburgh. The helicopter fell into the sea and then turned upside down during the evacuation. The helicopter was found broken into several pieces up against rocks at Fitful Head.

Recovered flight data noted by the Air Accident Investigation Branch suggests that the helicopter engines remained powered until impact. The manufacturer's initial analysis based on that data indicated that a combination of factors had placed the helicopter into a vortex ring state at low altitude which made impact "unavoidable".


Investigation

The Police Scotland and Air Accidents Investigation Branch have launched an investigation into the cause of the accident. On 5 September 2013, the Air Accidents Investigation Branch special bulletin reported that there is no evidence of a causal technical failure that could have led to the crash. Both the wreckage and black boxes are still being examined.


Incident summary
Date 23 August 2013
Summary Under Investigation
Site Fitful Head, 2 NM W off Sumburgh, Shetland Islands, Scotland
Passengers 16
Crew 2
Fatalities 4
Injuries (non-fatal) 14
Survivors 14
Aircraft type Eurocopter AS332L2 Super Puma
Operator CHC Helicopters
Registration G-WNSB
Flight origin Aberdeen Airport
Destination Sumburgh Airport


Air Crash Investigation