Flight Path.
A line, course or track along which an airplane is flying or intended to
be flown.
Flight Permit. A permit issued to an amateur built aircraft or to a private aircraft, that
does not qualify for a certificate of airworthiness for purposes of experiment, test,
demonstration or other special flight.
Flight Plan /Notification. Specified information, relating to the intended flight of an
aircraft, that is filed with ATC.
Flight Service Station (FSS). An aeronautical facility providing mobile and fixed
communications, flight information, search and rescue alerting and weather and
flight planning services to pilots and other users.
Flight Time. The time from the moment the aircraft first moves under its own power
for the purpose of flight until the moment it comes to rest at the next point of
landing.
Flight Watch. An enroute flight advisory service provided by Flight Service Stations
in the U.S. on frequency 122.0 MHz.
Flight Visibility. The average range of visibility at any given time forward from the
cockpit of an aircraft in flight.
Full Throttle Altitude. The maximum altitude at which maximum engine power
output is available. Above that altitude, the horsepower of the engine will be less
than the rated horsepower.
General Aviation. That portion of civil aviation which encompasses all facets of
aviation except scheduled air services and non-scheduled air transport operations
for remuneration or hire and military aviation.
Glide Path/Glide Slope. A descent profile determined for vertical guidance during a
final approach.
Glide Speed for Endurance. The airspeed that gives, with no power, minimum sink.
Glide Speed for Range. The airspeed that results in an angle of attack that gives the
maximum lift/drag ratio.
Global Positioning System (GPS). A precise navigation system based on satellites
orbitting the earth at very high altitude. Position in 3 dimensions is calculated by
triangulation.
Grid Navigation. A navigation system devised for use in areas in close proximity to
the north pole.
Gross Weight. The maximum permissible weight of the airplane.
Groundspeed. The speed of an aircraft relative to the surface of the ground.
Ground Visibility. The visibility at an aerodrome as reported by an ATC unit, an
FSS, a CARS, a Commet station or a ground based radio station operated by an
air carrier.
Heading. The direction in which the longitudinal axis of an aircraft is pointed, usually
expressed in degrees from north (true or compass).
Heading Indicator. An Instrument designed to indicate the heading of an airplane.
Height Above Aerodrome (HAA).The height in feet of the minimum descent
altitude above the published aerodrome elevation.
Height Above Touchdown Zone Elevation (HAT). The height in feet of the
decision height or the minimum descent altitude above the touchdown zone
elevation.
Hertz (Hz). The standard radio equivalent of frequency in cycles per second of an
electromagnetic wave. Kilohertz (KHz) is a frequency of 1000 cycles per second.
Megahertz (MHz) is a frequency of one million cycles per second.
High Frequency (HF). The frequency band between 3 and 30 MHz.
