Name: Airspace

Definition:
Designated airspace within which some or all aircraft may be subjected to air traffic control.

CC: GA005

Name: Air Traffic Service Route Segment / Leg

Definition:
A portion of an Air Traffic Service (ATS) Route identified by two electronic NAVAIDs at the extremities and/or reporting points.

CC: GA010

Name: Special Use Airspace

Definition:
Airspace of defined dimension identified by an area on the planetary surface where activities must be confined because of their nature and/or where limitations may be imposed on aircraft operations not associated with those activities.

CC: GA015

Name: Airspace Boundary Segment

Definition:
Single segment of an airspace. (See also AIRSPACE .)

CC: GA020

Name: Special Use Airspace Segment

Definition:
Single segment of a special use airspace. (See also SPECIAL_USE_AIRSPACE .)

CC: GA025

Name: Off Route Radial / Bearing

Definition:
The direction and distance from a NAVAID to a defined waypoint.

CC: GA030

Name: Lead Radial

Definition:
A radial or bearing which provides at least 2 miles of lead to assist in turning onto the intermediate portion of an instrument approach when the angle of intercept is greater than 90 arc degrees.

CC: GA031

Name: Navigation Aids (Aeronautical)

Definition:
Any visual or electronic device which provides point-to-point guidance information or position data for aircraft.

CC: GA035

Name: Route (Air)

Definition:
A specific route designated for channeling the flow or traffic as necessary for the provision of air traffic services.

CC: GA045

Name: Refueling Track

Definition:
A specific route designated for channeling the flow of traffic as necessary for the purpose of air refueling.

CC: GA046

Name: Complex Terminal Route

Definition:
Definition of route segments, action points, and various approach minimum altitudes and distances from the end of landing runway as functions of aircraft type and instrument approach procedures.

CC: GA047

Name: Instrument Landing System Terminal Segment

Definition:
A specific terminal route/segment designated for channeling the flow of traffic via Instrument Landing System (ILS) terminal procedures.

CC: GA048

Name: Waypoint / Reporting-Calling in Point

Definition:
A predetermined geographical position, used for route instrument approach definition or progress reporting purposes or to change frequency, etc.

CC: GA055

Name: Holding Pattern

Definition:
Holding pattern to be used while awaiting further clearance instructions.

CC: GA060

Name: Air Warning Light

Definition:
A light or lights marking an obstacle which constitutes a danger to air navigation.

CC: GA065

Name: Runway Primary Obstruction Identification Surface

Definition:
An imaginary air navigation obstruction identification surface (OIS) which is longitudinally centred on a runway, equal to the length of the runway plus 304.8 metres (1000 feet) on each end, and of a width of 609.6 metres (2000 feet). (See also RUNWAY and RUNWAY_ENDPOINT .)

CC: GA070

Name: Runway Approach Obstruction Identification Surface

Definition:
An imaginary air navigation obstruction identification surface (OIS) consisting of an inclined plane, symmetrical about the runway centreline, beginning 60.96 metres (200 feet) outward of the runway endpoint, at the height of the runway endpoint and extending for 12,903.04 metres (42,332 feet, or 7 nautical miles minus 200 feet of runway primary OIS). The slope of this surface is 50 to 1 along the runway centreline extended until it reaches a height of 152.4 metres (500 feet) above the height of the lowest height runway endpoint on the airport. It then continues horizontally at this height to a point 12,964 metres (42,532 feet or 7 nautical miles) from the runway endpoint. The width of this surface at the runway endpoint is the same as the runway primary OIS, it flares uniformly, and the width at 12,964 metres (42,532 feet) distance is 4,236.4 metres (13,899 feet). (See also RUNWAY , RUNWAY_ENDPOINT and RUNWAY_PRIMARY_OIS .)

CC: GA071

Name: Runway Primary Approach Transitional Obstruction Identification Surface

Definition:
An imaginary air navigation obstruction identification surface (OIS) connecting the sides of the runway primary and approach OIS to the runway inner horizontal OIS. This surface extends outward, perpendicular to the centreline of each runway, from the edges of the runway primary OIS, at a slope of 7 to 1, to a width of 320 metres (1050 feet) and a height of 45.7 metres (150 feet) above the height of the lowest height runway endpoint. (See also RUNWAY , RUNWAY_APPROACH_OIS , RUNWAY_INNER_HORIZONTAL_OIS and RUNWAY_PRIMARY_OIS .)

CC: GA072

Name: Runway Inner Horizontal Obstruction Identification Surface

Definition:
An imaginary air navigation obstruction identification surface (OIS) defined by two half circles centred on the runway endpoints and joined by tangents. The radii of the half circles are 2286 metres (7500 feet) and the tangents are parallel to the runway centreline at a distance of 2286 metres (7500 feet). This surface extends horizontally outward from the periphery of the runway primary approach transitional OIS at a height of 45.7 metres (150 feet) above the height of the lowest height runway endpoint. (See also RUNWAY , RUNWAY_ENDPOINT , and RUNWAY_PRIMARY_APPROACH_TRANSITIONAL_OIS .)

CC: GA073

Name: Runway Conical Obstruction Identification Surface

Definition:
An imaginary air navigation obstruction identification surface (OIS) extending from the periphery of the runway inner horizontal OIS outward and upward at a slope of 20 to 1 for a horizontal distance of 2133.6 metres (7000 feet) to a height of 152.4 metres (500 feet) above the height of the lowest height runway endpoint and 4419.6 metres (14,500 feet) from the runway centreline. (See also RUNWAY , RUNWAY_ENDPOINT and RUNWAY_INNER_HORIZONTAL_OIS .)

CC: GA074

Name: Runway Outer Horizontal Obstruction Identification Surface

Definition:
An imaginary air navigation obstruction identification surface (OIS) consisting of a horizontal plane, located 152.4 metres (500 feet) above the height of the lowest height runway endpoint, extending outward from the outer periphery of the runway conical OIS for a horizontal distance of 8,544.2 metres (28,032 feet) reaching a distance of 19,963.8 metres (42,532 feet) from the runway centreline. (See also RUNWAY , RUNWAY_CONICAL_OIS and RUNWAY_ENDPOINT .)

CC: GA075

Name: Runway Conical Outer Horizontal Transitional Obstruction Identification Surface

Definition:
An imaginary air navigation obstruction identification surface (OIS) connecting the side of the runway approach OIS to the sides of both the conical and outer horizontal OIS. This triangular surface extends outward, perpendicular to the extended runway centreline from the edges of the runway approach OIS, at a 7 to 1 slope. The slope of this surface is referenced to the runway centreline. (See also RUNWAY , RUNWAY_APPROACH_OIS , RUNWAY_CONICAL_OIS and RUNWAY_OUTER_HORIZONTAL_OIS .)

CC: GA076

Name: Aeronautical Communications Service

Definition:
Description of the communications to be used for various functions at an air terminal facility.

CC: GA300

Name: Airport / Airfield

Definition:
A defined area of land or water used for landing, take-off, and movement of aircraft including associated buildings and facilities. (See also AIRCRAFT_HANGAR , AIRPORT_TERMINAL and RUNWAY .)

CC: GB005

Name: Airstrip

Definition:
A land airport or airfield with limited facilities. (See also AIRPORT_OR_AIRFIELD .)

CC: GB006

Name: Airport Area

Definition:
A tract of land used for landing, take-off, and movement of aircraft not including associated buildings, runways and other facilities.

CC: GB007

Name: Airport Lighting

Definition:
Lights used to: define and outline perimeters, runways, taxiways, etc.; guide aircraft while on the ground; and to provide guidance to aircraft on approach for landing. (See also RUNWAY .)

CC: GB010

Name: Apron / Hardstand

Definition:
A defined paved or hard-packed area at an airport or heliport intended for aircraft parking. (See also AIRPORT_OR_AIRFIELD .)

CC: GB015

Name: Aircraft Storage Area

Definition:
A defined paved or hard-packed area intended for long-term aircraft parking and storage. (See also AIRPORT_OR_AIRFIELD .)

CC: GB016

Name: Aircraft Hangar

Definition:
A structure used for the storage of airplanes, helicopters, gliders, dirigibles and other craft which are capable of atmospheric flight. (See also AIRPORT_OR_AIRFIELD .)

CC: GB017

Name: Aircraft Maintenance Shop

Definition:
A structure, usually located at an airport or airfield, used for keeping aircraft in a condition of good repair or efficiency. (See also AIRPORT_OR_AIRFIELD .)

CC: GB018

Name: Arresting Gear

Definition:
Devices such as cables or barriers that can be used to stop an aircraft immediately upon landing.

CC: GB020

Name: Blast Barrier

Definition:
A barrier used to divert or dissipate jet or propeller blast.

CC: GB025

Name: Helicopter Landing Pad

Definition:
An improved area used for take-off, and landing, by helicopters and other vertical take-off and landing aircraft.

CC: GB030

Name: Heliport

Definition:
A place designated for the landing and take-off of helicopters, including its buildings and facilities.

CC: GB035

Name: Launch Pad

Definition:
A designated area or structure from which a rocket or missile is launched.

CC: GB040

Name: Overrun / Stopway

Definition:
An area beyond the take-off runway designated as able to support an airplane during an aborted take-off. (See also AIRPORT_OR_AIRFIELD .)

CC: GB045

Name: Runway Touchdown Zone

Definition:
The first 914.4 metres (3000 feet) of the runway beginning at the runway displaced threshold. The runway displaced threshold is the beginning of that portion of the runway available for landing. (See also RUNWAY .)

CC: GB046

Name: Revetment (Airfield / Equipment / Facilities)

Definition:
A barricade which protects aircraft, equipment, or facilities from hostile action.

CC: GB050

Name: Runway

Definition:
A defined area, usually rectangular, used for the conventional landing and take-off of aircraft, and excluding the overrun or stopway. (See also AIRPORT_OR_AIRFIELD , OVERRUN_OR_STOPWAY and RUNWAY_ENDPOINT .)

CC: GB055

Name: Runway Endpoint

Definition:
One of the points located on the runway centreline at each end of a runway. (See also RUNWAY .)

CC: GB056

Name: Shoulder

Definition:
Adjacent area along either side of a road or runway not normally used by vehicles or aircraft, but provided as an allowable margin in case of emergency situations.

CC: GB057

Name: Runway Markings

Definition:
Markings placed on the runway, which are used to define and outline perimeters, centrelines, taxiways, etc. in order to guide aircraft while on the ground; and to provide guidance to aircraft on approach for landing.

CC: GB058

Name: Airfield Elevation Point

Definition:
The highest point of an airport’s usable runways measured with respect to a specified vertical datum. (See also ELEVATION_OF_SURFACE .)

CC: GB059

Name: Runway Radar Reflector

Definition:
A device, normally placed near the threshold of a runway, used for reflecting radar signals.

CC: GB060

Name: Seaplane Base

Definition:
An area supporting aircraft capable of taking off and landing on water, including associated buildings and facilities.

CC: GB065

Name: Seaplane Landing / Seaplane Take-Off Area

Definition:
A designated portion of water outlined by visual surface markings, used by seaplanes to land and take off.

CC: GB070

Name: Taxiway

Definition:
A prepared surface providing access to/from runways and the aircraft parking area, terminal area, or service area, etc. (See also AIRPORT_OR_AIRFIELD .)

CC: GB075

Name: Wind Indicator

Definition:
A visual device used to provide wind information.

CC: GB080

Name: Airport Terminal

Definition:
A structure located at an airport or airfield used for disembarking or taking on passengers. (See also AIRPORT_OR_AIRFIELD .)

CC: GB090

Name: Decontamination Pad

Definition:
A designated area where a Nuclear, Biological, or Chemical (NBC) contaminated aircraft, checked at landing, is sent to be decontaminated by special teams.

CC: GB160

Name: Inertial Navigation System Alignment Pad

Definition:
A designated area where the automated navigation instruments of aircraft are reset before taking-off.

CC: GB170

Name: Air Obstruction

Definition:
An existing object of natural growth, or terrain at a fixed location, within a prescribed area with reference to which vertical clearance is or must be provided during flight operations.

CC: GB220

Name: Man-Made Air Obstruction

Definition:
A generic man-made air obstruction.

CC: GB221