NFC Learning

Acts of unlawful interference. These are acts or attempted acts such as to jeopardize the safety of civil aviation, including but
not limited to:
• unlawful seizure of aircraft,
• destruction of an aircraft in service,
• hostage-taking on board aircraft or on aerodromes,
• forcible intrusion on board an aircraft, at an airport or on the premises of an aeronautical facility,
• introduction on board an aircraft or at an airport of a weapon or hazardous device or material intended for criminal
purposes,
• use of an aircraft in service for the purpose of causing death, serious bodily injury, or serious damage to property or the
environment,
• communication of false information such as to jeopardize the safety of an aircraft in flight or on the ground, of
passengers, crew, ground personnel or the general public, at an airport or on the premises of a civil aviation facility.

ADIRU - An air data inertial reference unit (ADIRU) is a key component of the integrated air data inertial reference system (ADIRS), which supplies air data (airspeed, angle of attack and altitude) and inertial reference (position and attitude) information to the pilots' electronic flight instrument system displays as well as other systems on the aircraft such as the engines, autopilot, aircraft flight control system and landing gear systems. An ADIRU acts as a single, fault tolerant source of navigational data for both pilots of an aircraft. It may be complemented by a secondary attitude air data reference unit (SAARU), as in the Boeing 777 design

Air defence identification zone. Special designated airspace of defined dimensions within which aircraft are required to
comply with special identification and/or reporting procedures additional to those related to the provision of air traffic
services (ATS).

Admission. The permission granted to a person to enter a State by the public authorities of that State in accordance with its
national laws.

“ADS Agreement” means an ADS reporting plan which establishes the conditions of ADS
data reporting

ADS CONTRACT —A means by which the terms of an ADS agreement will be exchanged between the ground system and the aircraft, specifying under what conditions ADS reports would be initiated,and what data would be contained in the reports.NOTE:The term “ADS contract” is a generic term meaning variously, ADS event contract,ADS demand contract, ADS periodic contract or an emergency mode .Ground forwarding of ADS reports may be implemented between ground systems

“advisory airspace” means advisory areas or advisory routes

“advisory area” means an area designated by the appropriate ATS authority within a flight
information region where an Air Traffic Advisory Service is available

Aerodrome. A defined area on land or water (including any buildings, installations and equipment) intended to be used either
wholly or in part for the arrival, departure and surface movement of aircraft.

Aerodrome climatological summary. Concise summary of specified meteorological elements at an aerodrome, based on
statistical data