Mid-air collision

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CGI rendering of the 2002 Uberlingen mid-air collision Komp'iuternaia rekonstruktsiia stolknoveniia samoliotov nad Bodenskim ozerom.png
CGI rendering of the 2002 Überlingen mid-air collision

In aviation, a mid-air collision is an accident in which two or more aircraft come into unplanned contact during flight. [1] Owing to the relatively high velocities involved and the likelihood of subsequent impact with the ground or sea, very severe damage or the total destruction of at least one of the aircraft usually results. For this reason, accidents involving mid-air collisions especially during cruise frequently result in very few survivors or, more often, a total lack thereof. This is especially when the accident involves jet aircraft.

Contents

The potential for a mid-air collision is increased by miscommunication, mistrust, error in navigation, deviations from flight plans, lack of situational awareness, and the lack of collision-avoidance systems. Although a rare occurrence in general due to the vastness of open space available, collisions often happen near or at airports, where large volumes of aircraft are spaced more closely than in general flight.

First recorded collision

Contemporary artist's impression of the first mid-air collision, 1910 First air-plane collision 1910.JPG
Contemporary artist's impression of the first mid-air collision, 1910

The first recorded collision between aircraft occurred at the "Milano Circuito Aereo Internazionale" meeting held between 24 September and 3 October 1910 in Milan, Italy. On 3 October, Frenchman René Thomas, flying the Antoinette IV monoplane, collided with British Army Captain Bertram Dickson by ramming his Farman III biplane in the rear. [2] Both pilots survived, but Dickson was so badly injured that he never flew again. [3] [4] [5]

The first fatal collision occurred over La Brayelle Airfield, Douai, France, on 19 June 1912. Captain Marcel Dubois and Lieutenant Albert Peignan, both of the French Army, crashed into one another in an early-morning haze, killing both pilots. [6] [7]

Traffic collision avoidance system

Almost all modern large aircraft are fitted with a traffic collision avoidance system (TCAS), which is designed to try to prevent mid-air collisions. The system, based on the signals from aircraft transponders, alerts pilots if a potential collision with another aircraft is imminent. Despite its limitations, it is believed to have greatly reduced mid-air collisions. [8]

United States

Audio-input-microphone.svg
Bobbie R. Allen, Director of Safety at the Civil Aeronautics Board:
"We had the potential or the problem of mid-air collisions ever since Wilbur turned to Orville and said, 'Let's build another one.'"
Problems playing this file? See media help.

On some occasions, military aircraft conducting training flights inadvertently collide with civilian aircraft. The 1958 collision between United Airlines Flight 736 and a fighter jet, and another U.S. military/civilian crash one month later involving Capital Airlines Flight 300, hastened the signing of the Federal Aviation Act of 1958 into law. The act created the Federal Aviation Agency (later renamed the Federal Aviation Administration), and provided unified control of airspace for both civil and military flights. In 2005, in an effort to reduce such military/civilian mid-air collisions in U.S. airspace, the Air National Guard Flight Safety Division, led by Lt Col Edward Vaughan, used the disruptive solutions process to create a website called See and Avoid. It operated until January 2017. [9]

Lists

Involving civilians

DateFatalities [N 1] Survivors [N 2] Flights involvedPhase of flightSite
1922Apr 770 CGEA Farman F.60 / Daimler Hire Ltd. de Havilland DH.18A 492 ft Picardy, France
1929Apr 2160Maddux Airlines Ford 5-AT-B Trimotor / US Army Air Corps Boeing PW-9D)2,000 ftSan Diego, California, United States
1935May 18450 Tupolev ANT-20 Maxim Gorky VVS Polikarpov I-5 Cruise Moscow, Russian SFSR, Soviet Union
1938Aug 245 + 80 ground fatalitiesJapanese Flying School (Hanriot HD-1) and Japan Airlines Transportation (Fokker Super Universal)Unknown Ōmori, Tokyo, Japan
1942Oct 23122 American Airlines Flight 28 / US Army Air Force B-34 Ascent/descent (9000 ft) Chino Canyon, California, United States
1945Jul 12320 Eastern Airlines Flight 45 / US Army Air Force A-26 Invader Descent Florence, South Carolina, United States
1948Apr 5150 British European Airways Vickers VC.1 Viking / Soviet Air Force Yakovlev Yak-3 fighter Approach RAF Gatow, Berlin, Germany
1948Jul 4390 Scandinavian Airlines System DC-6 /RAF Avro York Descent Northwood, London, United Kingdom
1949Jan 30233Pan Am Flight 100 (Lockheed L-749 Constellation) / Cessna 140Climb Port Washington, New York, United States
1949Feb 19140 BEA Douglas Dakota /RAF Avro Anson Cruise Exhall, United Kingdom
1949Nov 1551 Eastern Air Lines 537 / Lockheed P-38 test flight Approach Washington, DC, United States
1951Apr 25430 Cubana de Aviación 493 / US Navy flight Cruise/climb Key West, Florida, United States
1952Jun 28260 American Airlines Flight 910 / private Temco Swift Approach Dallas, Texas, United States
1954Apr 8370 Trans-Canada Airlines Flight 9 / RCAF Harvard Cruise Moose Jaw, Saskatchewan Canada
1955Jan 12150 TWA Flight 694 / Private DC-3 Climb Boone County, Kentucky, United States
1956Jun 301280 UA Flight 718 / TWA Flight 2 Cruise Grand Canyon, Arizona, United States
1957Jan 3180 Douglas Aircraft Company DC-7B / Northrop F-89J Scorpion Cruise Pacoima, Los Angeles, California, United States
1958Apr 21490 United Airlines Flight 736 / USAF F-100 Super Sabre Cruise Las Vegas, Nevada, United States
1958May 20131 Capital Airlines Flight 300 / Air National Guard flight Descent Brunswick, Maryland, United States
1958Oct 22311 British European Airways Flight 142 / Italian Air Force F-86 Sabre jet fighter DescentNear Anzio, Italy
1960Feb 25613 Real Transportes Aéreos DC-3 / US Navy R6D flight Descent Rio de Janeiro, Brazil
1960May 19138 Air Algérie Sud Aviation SE210 Caravelle 1A / Stampe SV.4 Approach Paris-Orly, France
1960Dec 161340 UA Flight 826 / TWA Flight 266 Descent New York City, United States
1963Feb 11040 MEA Flight 265 / Turkish Air Force flight Descent Ankara, Turkey
1965Dec 44108 TWA Flight 42 / Eastern Airlines Flight 853 Descent Carmel, New York, United States
1967Mar 9260 TWA Flight 553 / Private flight Descent Urbana, Ohio, United States
1967Jul 19820 Piedmont Airlines Flight 22 / Lanseair Inc. flight Climb/descent Hendersonville, North Carolina, United States
1968Mar 27249 Ozark Air Lines Flight 965 / Private flight Approach St. Louis, Missouri, United States
1968Aug 4312 North Central Airlines Flight 261 / Private flightDescent/Cruise Wind Lake, Wisconsin, United States
1969Jun 231200 Aeroflot Flight 831/ Soviet Air Force flight Cruise Yukhnovsky District, Soviet Union
1969Sep 9820 Allegheny Airlines Flight 853 / Private flight Descent Fairland, Indiana, United States
1971Jun 6501 Hughes Airwest Flight 706 / F-4 Phantom Climb San Gabriel Mountains, California, United States
1971Jul 301621 ANA Flight 58 / JASDF flight Cruisenear Shizukuishi, Japan
1971Aug 4098 Continental Airlines Flight 712 / Private Flight3,950 ft Compton, California, United States
1972Jun 29130 North Central Airlines Flight 290 / Air Wisconsin Flight 671 Cruise Lake Winnebago, Wisconsin, United States
1972Jul 29380Avianca Flight 626  / Another Avianca Flight [10] [11] CruiseNear Las Palomas, Colombia
1973Mar 568107 Iberia Flight 504 /Spantax Flight 400 [12] Cruisenear Nantes, France
1974Aug 930 RAF Phantom FGR2 / Piper Pawnee crop duster Low levelFordham Fen, Norfolk, United Kingdom
1974Nov 1380 Antonov An-2 / Mil Mi-8 ApproachNear Surgut, Soviet Union
1975Jan 9140 Golden West Airlines Flight 261 / Private flight Climbnear Whittier, California, United States
1976Sep 9700 Aeroflot Flight 31 /Aeroflot Flight 7957 Cruisenear Anapa, Russian SFSR, Soviet Union
1976Sep 101760 British Airways Flight 476 / Inex-Adria Flight 550 Cruisenear Zagreb, SR Croatia, Yugoslavia
1978Sep 251440 PSA Flight 182 / Private flight Descent San Diego, California, United States
1979Aug 111780 Aeroflot Flight 7628 / Aeroflot Flight 7880 Cruise Dniprodzerzhynsk, Ukrainian SSR, Soviet Union
1981July 2831 Transporte Aéreo Rioplatense CL-44 /Soviet Air Force Sukhoi Su-15 Cruise Yerevan, ASSR
1981Aug 24371 Aeroflot Flight 811 /Soviet Air Force Tupolev Tu-16K Cruise Zavitinsk, Russian SFSR, Soviet Union
1984Apr 181916Two VOTEC Servicios Aéreos Regionais Flights [13] [14] ApproachNear Imperatriz Airport, Brazil
1984Aug 24170 Wings West Airlines Flight 628 / Rockwell Commander 112 Descent/climbNear San Luis Obispo, California
1985May 3940 Aeroflot Flight SSSR-65856  /Soviet Air Force Antonov An-26 Descent Zolochev, Ukrainian SSR, Soviet Union
1986Jun 18250 Grand Canyon Airlines Flight 6  /Private helicopter flight Low level Grand Canyon, United States
1986Aug 31820 Aeroméxico Flight 498 / Private flight Descent/climb Cerritos, California, United States
1987Jan 15100 SkyWest Airlines Flight 1834 / Private flight Approach Kearns, Utah, United States
1988Aug 283 + 67 ground fatalities0 3 Aermacchi MB-339PAN of the Frecce Tricolori Air show Ramstein Air Base, Germany
1990Apr 927 ASA Flight 2254 / Private flight Climb/descent Gadsden, Alabama, United States
1991Apr 45 + 2 ground fatalities0 Lycoming Air Piper Aerostar / Sun Oil Company Bell 412 Low level Merion, Pennsylvania
1992Dec 221572 Libyan Arab Airlines Flight 1103 / Libyan Air Force MiG-23 jet fighter Approach Tripoli, Libya
1993Feb 81330 Iran Air Tours Tupolev Tu-154M / Iranian Air Force Sukhoi Su-24 Climb/approach Tehran, Iran
1993Nov 2640 NZ Police Eagle / NZ Police traffic patrol Low level Auckland, New Zealand
1996Nov 123490 Saudia Flight 763 / Kazakhstan Airlines Flight 1907 Climb/descent Charkhi Dadri, India
1998Jul 30150 Proteus Airlines Flight 706 / Private flight Low level Quiberon Bay, France
2000Feb 830 Zlin 242L /Cessna 172 Descent Zion, Illinois, United States
2002Jul 1710 Bashkirian Airlines Flight 2937 / DHL Flight 611 Cruise Überlingen, Germany
2005Jan 1812 Air Tractor AT-502B  / US Air Force Cessna T-37B Cruise Hollister, Oklahoma, United States
2006Sep 291547 [15] Gol Transportes Aéreos Flight 1907 / ExcelAire flight Cruise Amazon rainforest, Brazil
2007Mar 580 Aérospatiale SA 332 Super Puma / private Diamond DV20 Katana Low level Zell am See Airport, Austria
2007Jul 2740 KNXV-TV news helicopter / KTVK news helicopter Low level Phoenix, Arizona, United States
2007Sep 120 Two Zlin Z-526Fs of the AZL Żelazny Aerobatic displayNear Radom, Poland
2009Aug 890 Piper PA-32 / Eurocopter AS350 helicopter Low level Hudson River, New York, United States
2012Sep 203200 Syrian Arab Airlines Flight RB-501 / Syrian Air Force Mil Mi-8 helicopter Climb Damascus, Syria
2013Nov 2011Cessna 182L / Cessna 185FCruise Superior, Wisconsin, United States [16] [17]
2015Mar 9100 Two Eurocopter AS350 helicopters Climb La Rioja Province, Argentina
2015Jul 721 USAF F-16 / Cesna 150 Approach / Climb Moncks Corner, South Carolina, United States
2015Sep 57112 Ceiba Intercontinental Airlines Flight 71 / Senegalair business jet CruiseEastern Senegal
2019May 13610 Mountain Air Service DHC-2 /Taquan Air DHC-3 Descent George Inlet, Alaska, United States
2020Jul 3170 de Havilland DHC-2 Beaver / Piper PA-12 Climb Soldotna, Alaska, United States
2021May 1203 Key Lime Air Flight 970 /Private Cirrus SR22 flight Approach Arapahoe County, Colorado, United States
2022Jul 1740Piper PA-46 Malibu / Cessna 172Approach North Las Vegas, Nevada, United States
2022Sep 1730Cessna 172 /Sonex XenosCruise Longmont, Boulder County, Colorado
2022Sep 2420Zlín Z-526 /Zlín Z-526Aerobatic display Gera, Germany
2022Nov 1260 Boeing B-17 Flying Fortress / Bell P-63 Kingcobra Climb Dallas, Texas, United States
2023Jan 249 Two Eurocopter EC130 helicopters Climb/descent Gold Coast Seaway, Queensland, Australia
2023Mar 740 Piper PA28-161 Cadet / Piper J-3 Cub Climb/Descent Winter Haven, Florida, United States
2024Mar 5244 De Havilland Canada Dash 8 / Cessna 172 Cruise Nairobi National Park, Kenya
2024Oct 2630 Cessna 182 / Jabiru UL-450 Cruise Belimbla Park, New South Wales, Australia

Purely military

XB-70 Valkyrie 62-0207 following the mid-air collision on 8 June 1966: The XB-70 can be seen at the far left of the image, missing one of its vertical stabilizers, while the large fireball is the F-104 Starfighter with which it collided. North American XB-70A Valkyrie just after collision 061122-F-1234P-037.jpg
XB-70 Valkyrie 62-0207 following the mid-air collision on 8 June 1966: The XB-70 can be seen at the far left of the image, missing one of its vertical stabilizers, while the large fireball is the F-104 Starfighter with which it collided.
DateFatalities [N 1] Survivors [N 2] Aircraft involvedSite
1940Sep 2904 Two Avro Ansons of the RAAF Brocklesby, New South Wales, Australia
1953Jan 15260 RAF Vickers Valetta / RAF Avro Lancaster Mediterranean Sea near Sicily
1955Aug 11660 Two USAF C-119 Flying Boxcars near Stuttgart, Germany
1958Feb 504 USAF B-47 Stratojet / USAF F-86 Sabre Tybee Island, Georgia, U.S.
1965Jun 15180 Two U.S. Army UH-1D Iroquoises Fort Benning, Georgia, U.S.
1966Jan 1774 USAF B-52G Stratofortress / USAF KC-135 Stratotanker Mediterranean Sea near Palomares, Almería, Spain
1983May 103 Israeli Air Force F-15 Eagle / A-4 Skyhawk Negev, Israel
1988Aug 2870 [N 3] 0 Three Aermacchi MB-339PAN aircraft of the Frecce Tricolori Ramstein Air Base, Germany
1994Mar 2324 [N 4] 7 F-16 Fighting Falcon / C-130 Hercules Pope Air Force Base, North Carolina, U.S.
1997Feb 4730 Two IAF Sikorsky CH-53 helicopters She'ar Yashuv, Israel
1997Sep 13330 USAF C-141B Starlifter / German Air Force Tupolev Tu-154M Off the coast of Namibia
2001Apr 1124 USN Lockheed EP-3E / PLAN Shenyang J-8II South China Sea near Hainan Island, PRC
2009Aug 1611 Two Sukhoi Su-27s of the Russian Knights Moscow, Russia
2009Oct 3090 USCG C-130 / USMC Cobra Helicopter Off the coast of California, U.S.
2011Mar 11 [18] 1 Two SLAF IAI Kfir Yakkala, Gampaha, Sri Lanka
2014Jun 2321 Learjet 35A / Eurofighter Typhoon Olsberg, Germany
2019Nov 25130 French Armed Forces Eurocopter Tiger / Eurocopter AS532 Cougar Ménaka, Ménaka Region, Mali
2022Nov 1260 B-17 Flying Fortress / Bell P-63 Kingcobra Dallas, Texas, U.S.
2023April 273 [19] 1 Two AH-64 Apache Healy, Alaska, U.S.
2023Jul 111Two T-27 Tucano Villavicencio, Meta, Colombia
2023Aug 253 [20]  ?Two L-39 Albatros Zhytomyr oblast, Ukraine
2024April 2310 [21] 0 AgustaWestland AW139 / Eurocopter Fennec RMN Lumut Naval Base, Lumut, Perak, Malaysia

See also

Related Research Articles

<span class="mw-page-title-main">Aviation accidents and incidents</span> Accidental aviation occurences

An aviation accident is an event during aircraft operation that causes serious injury, death, or destruction. An aviation incident is any operating event that compromises safety but does not progress to an aviation accident. Preventing accidents and incidents is the main goal of aviation safety.

<span class="mw-page-title-main">Pacific Southwest Airlines Flight 182</span> 1978 mid-air collision over San Diego

Pacific Southwest Airlines Flight 182 was a scheduled flight on September 25, 1978, by Pacific Southwest Airlines (PSA), from Sacramento to San Diego (SAN), with a stopover at Los Angeles (LAX). The aircraft serving the flight, a Boeing 727-214, collided mid-air with a private Cessna 172 over San Diego, California. It was Pacific Southwest Airlines' first fatal accident, and it remains the deadliest air disaster in California history. At the time, it was the deadliest air crash to occur in the United States, and remained so until the crash of American Airlines Flight 191 in May 1979.

<span class="mw-page-title-main">2002 Überlingen mid-air collision</span> Fatal plane collision over Germany

On 1 July 2002, BALBashkirian Airlines Flight 2937, a Tupolev Tu-154 passenger jet, and DHL International Aviation ME Flight 611, a Boeing 757 cargo jet, collided in mid-air over Überlingen, a southern German town on Lake Constance, near the Swiss border. All of the passengers and crew aboard both planes were killed, resulting in a total death toll of 71.

<span class="mw-page-title-main">Traffic collision avoidance system</span> Aircraft collision avoidance system

A traffic alert and collision avoidance system is an aircraft collision avoidance system designed to reduce the incidence of mid-air collision (MAC) between aircraft. It monitors the airspace around an aircraft for other aircraft equipped with a corresponding active transponder, independent of air traffic control, and warns pilots of the presence of other transponder-equipped aircraft which may present a threat of MAC. It is a type of airborne collision avoidance system mandated by the International Civil Aviation Organization to be fitted to all aircraft with a maximum take-off mass (MTOM) of over 5,700 kg (12,600 lb) or authorized to carry more than 19 passengers. CFR 14, Ch I, part 135 requires that TCAS I be installed for aircraft with 10-30 passengers and TCAS II for aircraft with more than 30 passengers. ACAS/TCAS is based on secondary surveillance radar (SSR) transponder signals, but operates independently of ground-based equipment to provide advice to the pilot on potentially conflicting aircraft.

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<span class="mw-page-title-main">1996 Charkhi Dadri mid-air collision</span> Fatal mid-air plane collision in India

On 12 November 1996, Saudia Flight 763, a Boeing 747 en route from Delhi, India, to Dhahran, Saudi Arabia, and Kazakhstan Airlines Flight 1907, an Ilyushin Il-76 en route from Chimkent, Kazakhstan, to Delhi, collided over the city of Charkhi Dadri, around 100 km west of Delhi. The crash killed all 349 people on board both planes, making it the world's deadliest mid-air collision and the deadliest aviation accident ever in India. The final report from the investigation found that "[T]he root and approximate cause of the collision" was the failure of the Kazakh crew to maintain the correct altitude. Contributing factors included the poor English language skills in the Kazakh cockpit resulting in inadequate interpretation of directions provided by air traffic control, and three specific incidents of failures in crew resource management (CRM) by the Kazakh crew. The report also suggested technical enhancements that would provide assistance in preventing a future crew's mistakes being allowed to go unchecked in real time.

<span class="mw-page-title-main">1960 New York mid-air collision</span> Aviation disaster in New York City

On December 16, 1960, a United Airlines Douglas DC-8 bound for Idlewild Airport in New York City collided in midair with a TWA Lockheed L-1049 Super Constellation descending toward LaGuardia Airport. The Constellation crashed on Miller Field in Staten Island and the DC-8 in Park Slope, Brooklyn, killing all 128 aboard the two aircraft and six people on the ground. The accident was the world's deadliest aviation disaster at the time, and remains the deadliest accident in the history of United Airlines.

<span class="mw-page-title-main">TWA Flight 553</span> 1967 aviation disaster in Concord Township, Ohio, US

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<span class="mw-page-title-main">Allegheny Airlines Flight 853</span> 1969 mid-air collision

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<span class="mw-page-title-main">Gol Transportes Aéreos Flight 1907</span> 2006 mid-air plane collision in Brazil

On 29 September 2006, Gol Transportes Aéreos Flight 1907, a Boeing 737-800 on a scheduled domestic passenger flight from Manaus, Brazil, to Brasília and Rio de Janeiro, collided mid-air with an Embraer Legacy 600 business jet flying on an opposite heading over the Brazilian state of Mato Grosso. The winglet of the Legacy sliced off about half of the 737's left wing, causing the 737 to break up and crash into an area of dense jungle, killing all 154 passengers and crew. Despite sustaining serious damage to its left wing and tail, the Legacy landed with its seven occupants uninjured.

<span class="mw-page-title-main">2015 Senegal mid-air collision</span> Commercial aviation accident

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References

Notes
  1. 1 2 All deaths directly attributable to the collision are counted as fatalities.
  2. 1 2 In general, only occupants of an aircraft directly involved in the mid-air collision are counted as survivors. Bystanders who received nonfatal or no injuries, such as airshow spectators, participants in a military exercise, occupants of nearby noninvolved aircraft, and/or airport ground crew, are not included unless their involvement in the incident is particularly notable.
  3. ↑ Includes three aircrew and 67 ground fatalities, refer to main article.
  4. ↑ All ground fatalities, refer to main article.
Citations
  1. ↑ "Eurocontrol".
  2. ↑ Villard, Henry Serrano (1 January 1968). CONTACT! The Story of the Early Birds Man's first decade of flight from Kitty Hawk to World War I. Thomas Y. Crowell Co.
  3. ↑ "Aeroplanes in Collision". Popular Mechanics. January 1911. p. 91.
  4. ↑ "The Milan Aviation Meeting, Italy, 1910". Science Museum Pictorial. Science and Society Picture Library. 1910. Retrieved 13 January 2011.
  5. ↑ "Continental Flight Meetings". Flight. 8 October 1910. pp. 828–829. ...the Antoinette monoplane crashed on to the biplane, both machines falling to earth a mass of broken planes and tangled wires.
  6. ↑ Dr. Andrew Cook (2007). European Air Traffic Management: Principles, Practice, and Research. Ashgate Publishing, Ltd. ISBN   978-0-7546-7295-1.
  7. ↑ "ASN Wikibase Occurrence # 204203". Aviation Safety Network. Flight Safety Foundation. Retrieved 25 February 2020.
  8. ↑ "Federal Aviation Administration – Home Page – TCAS". 2011-07-21. Archived from the original on 2011-07-21. Retrieved 2018-07-22.
  9. ↑ "SeeAndAvoid.org". Archived from the original on 2006-10-20.
  10. ↑ "Accident Description for HK-1341". Aviation Safety Network. 1972-07-29. Retrieved 2020-06-15.
  11. ↑ "Accident Description for HK-107". Aviation Safety Network. 1972-07-29. Retrieved 2020-06-15.
  12. ↑ "1973: Mid-air collision kills 68". BBC. 5 Mar 1973. Retrieved 2011-07-02.
  13. ↑ "Accident Description for PT_GJZ". Aviation Safety Network. 1984-04-18. Retrieved 2020-06-15.
  14. ↑ "Accident Description for PT-GKL". Aviation Safety Network. 1984-04-18. Retrieved 2020-06-15.
  15. ↑ Guilherme Poggio (24 May 2010). "Sobrevivente do acidente com o voo 1907 da GOL rompe silêncio | Poder Aéreo – Forças Aéreas e Indústria Aeronáutica". Aereo.jor.br. Retrieved 2016-09-27.
  16. ↑ "NTSB Identification: CEN14LA036A". 23 Jul 2015. Retrieved 2018-08-25.
  17. ↑ Jeff Wise (6 Nov 2013). "What Went Wrong in the Skydiving Planes Collision?". Popular Mechanics. Retrieved 2018-08-26.
  18. ↑ Kirinde, Chandani (6 March 2011). "Shocked residents see Kfirs crashing, pilot plummeting". sundaytimes.lk. Retrieved 29 November 2024.
  19. ↑ Albeck-Ripka, Livia (28 April 2023). "Two U.S. Army helicopters crash in Alaska, killing 3 soldiers". The New York Times. ISSN   0362-4331 . Retrieved 29 April 2023.
  20. ↑ "Three Ukrainian military fighter pilots die in mid-air collision". The Jerusalem Post. 2023-08-26. Retrieved 2023-08-26.
  21. ↑ "Copter tragedy: 10 dead, no survivors, says Ministry". The Star. 2024-04-23. Retrieved 2024-05-27.
Bibliography
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