Glossary of Terms
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GAMET area forecast. An area forecast in abbreviated plain language for low-level flights for a flight information region or
GBAS landing system (GLS) means an approach landing system using ground based augmented global navigation satellite system (GNSS/GBAS) information to provide guidance to the aircraft based on its lateral and vertical GNSS position. It uses geometric altitude reference for its final approach slope.
Geodesic distance. The shortest distance between any two points on a mathematically defined ellipsoidal surface.
Geodetic datum. A minimum set of parameters required to define location and orientation of the local reference system with
Geoid. The equipotential surface in the gravity field of the Earth which coincides with the undisturbed mean sea level (MSL)
Geoid undulation. The distance of the geoid above (positive) or below (negative) the mathematical reference ellipsoid.
Glide path. A descent profile determined for vertical guidance during a final approach.
A non-power-driven heavier-than-air aircraft, deriving its lift in flight chiefly from aerodynamic reactions on surfaces
Glider flight time
The total time occupied in flight, whether being towed or not, from the moment the glider first moves for the