NFC Learning

G.P.T. - Ground Programming Tool

Gray (Gy). The energy imparted by ionizing radiation to a mass of matter corresponding to 1 joule per kilogram.

Gregorian calendar. Calendar in general use; first introduced in 1582 to define a year that more closely approximates the
tropical year than the Julian calendar (ISO 19108*).
Note.— In the Gregorian calendar, common years have 365 days and leap years 366 days divided into twelve sequential
months.

Grid point data in digital form. Computer processed meteorological data for a set of regularly spaced points on a chart, for
transmission from a meteorological computer to another computer in a code form suitable for automated use.
Note.— In most cases, such data are transmitted on medium- or high-speed telecommunications channels.

“ground handling” means those services necessary for an aircraft’s arrival at and
departure from an airport, other than air traffic services;

'Ground Idling Conditions’ (turbine engines) means the conditions of minimum rotational speed associated with zero forward speed and the maximum exhaust gas temperature at this speed.

“ground visibility” means the visibility at an aerodrome, as reported by an observer
accredited by the appropriate authority

‘Gyroplane’ means a rotorcraft the rotors of which are not engine driven except for initial starting, but are made to rotate by action of the air when the rotorcraft is moving, and the means of propulsion of which, consisting usually of conventional propellers, is independent of the rotor system.