Aviation Dictionary

Common definitions and acronyms that you may encounter during flying training.

List of aviation related definitions

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Scheduled Danger Area -  A danger area active during published hours
Search and Rescue Region -  An area of defined dimensions within which a search and rescue service is provided
Semi-Circular Rule -  Above FL245 in uncontrolled airspace, flights are required to follow the semi-circular rule
Semicircular Canals -  Three small loops above the cochlea filled with liquid used for balance
SEP -  Single Engine Piston
Serious Incident -  An incident involving circumstances indicating that an accident nearly occurred
Spatial Disorientation -  The inability of a pilot to correctly interpret aircraft attitude, altitude or airspeed in relation to the Earth or other points of reference
Spatial Orientation - 
Defines our natural ability to maintain our body orientation and/or posture in relation to the surrounding environment (physical space) at rest and during motion
Standard Pressure -  1013.2mb is the pressure setting derived from the ISA and is the pressure setting used when the aircraft is flying at flight levels
Starboard -  Right
Stopway -  The area beyond the runway which can be used for deceleration in the event of a rejected take-off. It is centred upon the runway extended centreline and capable of supporting the aeroplane during an aborted take-off without causing structural damage to the aircraft.