off-aerodrome
off-airway
off-block
off-boresight
off-course
off-design
offer
off-field
office
official
  off-line
off-load
offload
off-peak
off-route
off-season
offset
off-shore
off-slope
off-track
oil

    off-line charter

    чартерный рейс при отсутствии регулярных полетов