Aircraft Turnaround Plan
The detailed description of duties, responsibilities and tasks, and their relation in the chain of ground operations activities associated with the handling of an aircraft and passengers during the period of time from aircraft arrival to departure (i.e. aircraft “turnaround”), and to ensure the safety, security and efficiency of such operations, as well as compliance with the requirements of customer airlines and relevant authorities.

Aircraft Type
All aircraft of the same basic design, including all modifications except those modifications which result in a change of handling, flight characteristics or flight crew complement.
Aircraft Type Certificate See Type Certificate
Aircraft Variant (within Type)
As used with respect to the licensing and operation of flight crew, means an aircraft of the same basic certificated type which contain modifications not resulting in significant changes of handling and/or flight characteristics, or flight crew complement, but causing significant changes to equipment and/or procedures.
Air Traffic Services (ATS)
A generic term collectively referring to flight information service, alerting service, air traffic advisory service, air traffic control service (area control service, approach control service and airport control service).