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Occurrences have been coded to allow for identification and sorting by group membership (accidents and related incidents versus attacks).
Any collision between a commercial and military aircraft is coded COM.
To provide some indication of distance between the site and the nearest location, the following three descriptors are applied:
The names of occurrence locations are based on their present-day names.
The phases of flight are those defined by the joint Commercial Aviation Safety Team/ICAO Common Taxonomy Team. [19]
Airports associated with occurrences at all phases of flight (except ENR) are represented by their three-letter IATA airport code. In some cases, no IATA code is reported/assigned in which case the four-letter ICAO code is used. In rare instances (e.g., active or decommissioned military bases or closed airports whose civil codes have been reassigned), no codes exist. These airports are represented with three asterisks "***" in place of letters. Distance from the point of impact to the airport runway is provided for occurrences during the initial climb (ICL) and approach (APR) phases. On occasion, distance is provided for occurrences during takeoff (TOF) and landing (LDG) if the aircraft impacted within the aerodrome, but not on the runway.
All accident and incident references to the Aviation Safety Network database are sub-pages of their main website, http://aviation-safety.net.