#air_travel__airtravel__aviation__air  travel via aircraft; "air travel involves too much waiting in airports"; "if you've time to spare go by air"
  supertype:  #travel__travelling__traveling  the act of going from one place to another; "he enjoyed selling but he hated the travel"
  subtype:  #flying__flight  an instance of traveling by air; "flying was still an exciting adventure for him"
     subtype:  #aerobatics__acrobatics__stunting__stunt_flying__stuntflying  the performance of stunts while in flight in an aircraft
        subtype:  #tailspin.aerobatics__spin  rapid descent of an aircraft in a steep spiral spin
     subtype:  #blind_flying__blindflying__blind_landing__blindlanding  using only instruments for flying an aircraft because you cannot see through clouds or mists etc.
     subtype:  #ballooning  flying in a balloon
     subtype:  #flyover__flypast  a low-altitude flight (usually of military aircraft) over spectators on the ground
     subtype:  #gliding__glide__sailplaning__soaring__sailing  the activity of flying a glider
        subtype:  #hang_gliding  gliding in a hang glider
        subtype:  #parasailing  gliding in a parasail
     subtype:  #pass  a flight or run by an aircraft over a target; "the plane turned to make a second pass"
     subtype:  #solo.flying  a flight in which the aircraft pilot is unaccompanied
     subtype:  #sortie  an operational flight by a single aircraft (as in a military operation)
     subtype:  #terrain_flight__terrainflight__low_level_flight__lowlevelflight  flight at very low altitudes

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