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Accident Categories:
A = Accident
I = Incident
H = Hijacking
C = Criminal occurrence (sabotage, shoot down)
O= other occurrence (ground fire, sabotage)
U= type of occurrence unknown

1 = hull-loss
2 = repairable damage

E.g. the A1 category means an Accident resulting in a total loss of the plane. For more information about the definitions for Accident, Incident etc., check out the Standards used on aviation-safety.net (ASN) (MS Word)

Status:Final - the official final investigation report was used
Preliminary- Official - the official preliminary investigation report was used
Preliminary - press information and other unofficial information was used
Date:Date of occurrence (local time), format DD MMM YYYY
Time:Time of the accident; if nothing specified local time is given.
Type:Manufacturer and exact model involved in the accident. For Boeing models for instance a (first) customer code is being used. The second and third digits indicate this code. Customer code for Boeing 747-206 is '06', which is KLM.
Operator:The company, organisation or individual operating the aircraft at the time of the accident.
Registration: The registrationmark of the aircaft
C/n: Manufacturer serial/construction number. Some manufacturer like Boeing and McDonnell Douglas include the line number, preceded by a /. Thus a Boeing 767, c/n 24542/28 means it has construction number 24542, and that it is the 28th B767 off the production line. Construction numbers for each manufacturer are usually unique.
Year built: Year the aircraft in question was manufactured
Engines: number and type of engines
Total airframe hrs: Total airframe hours at the time of the accident
Cycles: Total number of take-offs and landings at the time of the accident
Crew:Exact number of flight- and cabincrewmembers aboard the aircraft at the time of the accident, and number of passengers fatally injured as a direct result of the accident. An injury is classified as fatal if death results from the injury within 30 days from the date of the accident (ICAO) Deadheading crewmembers are judged 'passengers'.
Passengers:Number of passengers aboard the aircraft at the time of the accident, and number of passengers fatally injured as a direct result of the accident.An injury is classified as fatal if death results from the injury within 30 days from the date of the accident (ICAO)
Total:Number of occupants (crew + passengers) aboard the aircraft at the time of the accident, and number of occupants fatally injured as a direct result of the accident. An injury is classified as fatal if death results from the injury within 30 days from the date of the accident (ICAO)
Ground casualties:Number of casualties on the ground as a direct result of the accident.
Collision casualties:Number of casualties aboard other aircraft involved in the accident.
Damage:Written off (=damaged beyond repair), Substantial, Minor, None, Unknown.
Location:Exact or distance to city or airport where the accident happened. In some cases the name of a mountain(range) or sea/ocean is given. For US cities and airports the State is added using the common format and abbreviation, for example Anchorage, AK means Anchorage, Alaska. Local spelling is used as much as possible. If in doubt, the Times Atlas of the World (comprehensive edition; 9th ed., 1994) was used. The spelling of geographical names in this atlas is in accordance with the principles and practice of the British Permanent Committee on Geographical Names.
Between brackets: the Country were the accident happened
NB: A 1966 accident at Ljubljana (then part of Yugoslavia) is listed as "Slovenia" (as Ljubljana is now part of Slovenia).
Phase: Flightphase.
Nature:Nature of the flight
Departure airport:Last airport of departure before the accident (between brackets if known the IATA airport code)
Destination airport:Scheduled destination airport. In case of diversions, the intended destination airport is given (between brackets if known the IATA airport code)
Flightnumber:Flightnumber as assigned to the flight by the airline.
Narrative:
Short description of the accident. When a PROBABLE CAUSE is given between quotes (" ") this means the text was quoted from an official source (the final investigation report or ICAO files).
Also see the abbreviations page.

Follow-up / safety actions:
Actions taken by parties involved to prevent accident recurrence. A.o. airworthiness directives, safety recommendations etc.

Related information/accidents:

Source:
Also see the main sources and abbreviations pages.

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