Abbreviations and Definitions

Airside

The movement area of an airport, adjacent terrain and buildings, access to which is controlled.

Apron

A special area on of an airport designed for loading, unloading, parking, refueling, and maintaining an aircraft.

Civil twilight

Center of sun’s disk is 6 degrees below the horizon.

Controlled flight

Any flight which is subject to an air traffic control clearance, i.e. authorization for an aircraft to proceed under conditions specified by an air traffic control unit.

Cross country flight

A flight between a point of departure and a point of arrival following a pre-planned route and using standard navigation procedures.

Essential traffic

A controlled flight constitutes essential traffic to another controlled flight, when it is not (or will not be) separated from the other controlled flight by the appropriate separation minima.

Flight time

Ends, when the airplane finally comes to a rest at the end of a flight.

Movement area

The maneuvering area, aprons, maintenance stands and any other part of the aerodrome intended for the surface movement of aircraft.

Multi-pilot aircraft

At least two pilots.

Night time

End of evening civil twilight to beginning of morning civil twilight.

Precision approach path indicator (PAPI)

Missing.

APAPI

Pilot in command (PIC)

Missing.

Proficiency check

Demonstration of skills to revalidate rating.

Operator proficiency checks are for commercial operators. Validity 6 months from last expiring date if validation took place within 3 months of this expiring date.

Rating

Missing.

Instrument Rating (IR)…

Reduced vertical separation minimum (RVSM)

Missing.

Renewal

Administrative action taken after a certificate has lapsed.

Revalidation

Administrative action taken within period of validation to continue.

Skill test

Demonstration of skills for a license or a rating.