NFC Learning

Search and rescue (SAR) service. The performance of distress
monitoring, communication, coordination and search and
rescue functions, initial medical assistance or medical evacuation,
through the use of public and private resources,
including cooperating aircraft, vessels and other craft and
installations.

Search and rescue region (SRR). An area of defined dimensions,
associated with a rescue coordination centre, within
which search and rescue services are provided.

Search and rescue (SAR) aircraft. An aircraft provided with
specialized equipment suitable for the efficient conduct of
search and rescue missions.

Search and rescue services unit. A generic term meaning, as the case may be, rescue coordination centre, rescue subcentre or
alerting post.

Second(s). The duration of 9 192 631 770 periods of the radiation corresponding to the transition between the two hyperfine
levels of the ground state of the caesium-133 atom.

Security. Safeguarding civil aviation against acts of unlawful interference. This objective is achieved by a combination of
measures and human and material resources.

Security audit. An in-depth compliance examination of all aspects of the implementation of the national civil aviation security
programme.

Security control. A means by which the introduction of weapons, explosives or other dangerous devices, articles or substances
which may be used to commit an act of unlawful interference can be prevented.

Security inspection. An examination of the implementation of relevant national civil aviation security programme
requirements by an airline, airport, or other entity involved in security.

Security equipment. Devices of a specialized nature for use, individually or as part of a system, in the prevention or detection
of acts of unlawful interference with civil aviation and its facilities.

Security restricted area. Those areas of the airside of an airport which are identified as priority risk areas where in addition to
access control, other security controls are applied. Such areas will normally include, inter alia, all commercial aviation
passenger departure areas between the screening checkpoint and the aircraft, the ramp, baggage make-up areas, including
those where aircraft are being brought into service and screened baggage and cargo are present, cargo sheds, mail centres,
airside catering and aircraft cleaning premises.

Segregated parallel operations. Simultaneous operations on parallel or near-parallel instrument runways in which one runway
is used exclusively for approaches and the other runway is used exclusively for departures.

“SELCAL” means a system which permits the selective calling of individual aircraft over
radio-telephone channels linking a ground station with an aircraft;

Self-sustaining powered sailplane. A powered aeroplane with available engine power which allows it to maintain level flight
but not to take off under its own power.