## Glossary of Terms

Special | A | B | C | D | E | F |

**G**| H | I | J | K | L | M | N | O | P | Q | R | S | T | U | V | W | X | Y | Z | ALL

## G |
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## GAMETGAMET area forecast. An area forecast in abbreviated plain language for low-level flights for a flight information region or | |

## GBASGBAS 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 distanceGeodesic distance. The shortest distance between any two points on a mathematically defined ellipsoidal surface. | |

## Geodetic datumGeodetic datum. A minimum set of parameters required to define location and orientation of the local reference system with | |

## GeoidGeoid. The equipotential surface in the gravity field of the Earth which coincides with the undisturbed mean sea level (MSL) | |

## Geoid undulationGeoid undulation. The distance of the geoid above (positive) or below (negative) the mathematical reference ellipsoid. | |

## Glide path.Glide path. A descent profile determined for vertical guidance during a final approach. | |

## GliderA non-power-driven heavier-than-air aircraft, deriving its lift in flight chiefly from aerodynamic reactions on surfaces | |

## Glider flight timeThe total time occupied in flight, whether being towed or not, from the moment the glider first moves for the | |