Glossary of Terms

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Safe forced landing

“safe forced landing” means an unavoidable landing or ditching with a reasonable
expectancy of no injuries to persons in the aircraft or on the surface or of no significant
damage to property;

Safety recommendation

Safety recommendation. A proposal of an accident investigation authority based on information derived from an investigation,
made with the intention of preventing accidents or incidents and which in no case has the purpose of creating a
presumption of blame or liability for an accident or incident. In addition to safety recommendations arising from accident
and incident investigations, safety recommendations may result from diverse sources, including safety studies.

Safety sensitive personnel

“safety sensitive personnel” means persons who might endanger aviation safety if they
perform their duties and functions improperly, including, but not limited to, flight and
cabin crew members, aircraft maintenance personnel and air traffic controllers;


‘Sailplane’ means a heavier-than-air aircraft that is supported in flight by the dynamic reaction of the
air against its fixed lifting surfaces, the free flight of which does not depend on an engine.


SALS - Short Approach Lighting System



Standard and Recommended Practices

Satisfactory evidence

Satisfactory evidence. A set of documents or activities that a Contracting State accepts as sufficient to show compliance with
an airworthiness requirement.


S.C.I. - Secure Communication Interface


SCPs - Special category of passenger(s) Persons requiring special conditions, assistance and/or devices when carried on a flight shall be considered as SCPs


Screening. The application of technical or other means which are intended to identify and/or detect weapons, explosives or
other dangerous devices, articles or substances which may be used to commit an act of unlawful interference.

Note.— Certain dangerous articles or substances are classified as dangerous goods by Annex 18 and the associated
Technical Instructions for the Safe Transport of Dangerous Goods by Air (Doc 9284) and must be transported in accordance
with those instructions. In addition, the Aviation Security Manual (Doc 8973 — Restricted) provides a list of prohibited items
that must never be carried in the cabin of an aircraft.

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