NFC Learning

AIRAC. An acronym (aeronautical information regulation and control) signifying a system aimed at advance notification based
on common effective dates, of circumstances that necessitate significant changes in operating practices.

“airborne collision avoidance system (ACAS)” means an aircraft system based on
secondary surveillance radar (SSR) transponder signals which operates independently of
ground-based equipment to provide advice to the pilot on potential conflicting aircraft that
are equipped with SSR transponders;

Aircraft address. A unique combination of twenty-four bits available for assignment to an aircraft for the purpose of airground
communications, navigation and surveillance.

Aircraft equipment. Articles, including first-aid and survival equipment and commissary supplies, but not spare parts or
stores, for use on board an aircraft during flight

Aircraft observation. The evaluation of one or more meteorological elements made from an aircraft in flight.

“aircraft operating manual” means a manual, acceptable to the state of the operator,
containing normal, abnormal and emergency procedures, checklists, limitations,
performance information, details of the aircraft systems and other material relevant
to the operation of the aircraft. This manual is part of the Operations Manual
defined below.

Aircraft proximity. A situation in which, in the opinion of a
pilot or air traffic services personnel, the distance between
aircraft as well as their relative positions and speed have
been such that the safety of the aircraft involved may
have been compromised. An aircraft proximity is
classified as follows:

Risk of collision. The risk classification of an aircraft
proximity in which serious risk of collision has
existed.

Safety not assured. The risk classification of an aircraft
proximity in which the safety of the aircraft may have
been compromised.

No risk of collision. The risk classification of an aircraft
proximity in which no risk of collision has existed.

Risk not determined. The risk classification of an aircraft
proximity in which insufficient information was
available to determine the risk involved, or inconclusive
or conflicting evidence precluded such
determination.

Aircraft security check. An inspection of the interior of an aircraft to which passengers may have had access and an inspection
of the hold for the purposes of discovering suspicious objects, weapons, explosives or other dangerous devices, articles and
substances.

Aircraft security search. A thorough inspection of the interior and exterior of the aircraft for the purpose of discovering
suspicious objects, weapons, explosives or other dangerous devices, articles or substances.

Aircraft stand. A designated area on an apron intended to be used for parking an aircraft.

Aircraft station (RR S1.83). A mobile station in the aeronautical
mobile service, other than a survival craft station,
located on board an aircraft.