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A mid-air collision is an aviation accident in which two or more aircraft come into unplanned contact during flight. 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 involved usually results.
The potential for a mid-air collision is increased by miscommunication, mistrust, error in navigation, deviations from flight plans, 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 mid-air collision
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. Both pilots survived, but Dickson was so badly injured that he never flew again.
Efforts to prevent collisions
Almost all modern aircraft are fitted with 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 the chance of a mid-air collision.
Civilian/Military mid-air collisions
On some occasions, military aircraft conducting training flights inadvertently collide with civilian aircraft. Before 1958, civilian air traffic controllers guiding civilian flights and military controllers guiding military aircraft were both unaware of the other's aircraft.The 1958 collision between United Airlines Flight 736 and a fighter jet, as well as 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, as part of 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 the See and Avoid web portal. In late 2006, the U.S. Defense Safety Oversight Council (DSOC) recognized and funded the site as its official civil/military mid-air collision prevention website, with participation by all the services.
List of notable civilian and military-civilian mid-air collisions
List of notable military mid-air collisions
- Runway incursion, including a list of aircraft collisions on the ground
- Automatic dependent surveillance – broadcast (ADS-B)
- Disruptive solutions process
- List of mid-air collisions and incidents in the United Kingdom
- Near miss (safety)
- Portable collision avoidance system (PCAS)
- Traffic collision avoidance system (TCAS)
- All deaths directly attributable to the collision are counted as fatalities.
- 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 non-involved aircraft, and/or airport ground crew, are not included unless their involvement in the incident is particularly notable.
- Includes 20 ground fatalities caused by detonation of bomb that fell from one aircraft.
- Includes 3 aircrew and 67 ground fatalities. Refer to main article.
- All ground fatalities. Refer to main article.
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- "The Milan Aviation Meeting, Italy, 1910". Science Museum Pictorial. Science and Society Picture Library. 1910. Retrieved 13 January 2011.
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...the Antoinette monoplane crashed on to the biplane, both machines falling to earth a mass of broken planes and tangled wires.
- Dr. Andrew Cook (2007). European Air Traffic Management: Principles, Practice, and Research. Ashgate Publishing, Ltd. ISBN 978-0-7546-7295-1.
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- Gero 2010, pp. 26–27.
- Gero 2010, p. 78.
- AP (1988-03-10). "17 DIE IN COLLISION OF ARMY COPTERS". Fort Campbell (Ky): NYTimes.com. Retrieved 2016-09-27.
- Gero, David B. "Military Aviation Disasters: Significant Losses Since 1908". Sparkford, Yoevil, Somerset, UK: Haynes Publishing, 2010, ISBN 978-1-84425-645-7
- Analysis of Mid-Air Collisions, One of the most hazardous consequences of a loss of separation between aircraft, including as a result of a level bust, is a mid-air collision SKYbrary
- Indepth Backgrounder: Mid-air collision, CBC
- SeeAndAvoid, DoD Civil-Military Mid-air Collision Prevention Portal
- Low Altitude Military Aircraft Deconfliction Webtool
- James Albright (Mar 28, 2017). "Big Sky Redefined". Business & Commercial Aviation. Aviation Week.