Order 7110.65P, Air Traffic Control, with changes

8/5/04Pilot/Controller Glossaryairspace will normally be designed to contain theprocedures. Arrival extensions for instrument approachprocedures may be Class D or Class Eairspace. Unless otherwise authorized, each personmust establish two-way radio communications withthe ATC facility providing air traffic services prior toentering the airspace and thereafter maintain thosecommunications while in the airspace. No separationservices are provided to VFR aircraft.5. CLASS E− Generally, if the airspace is notClass A, Class B, Class C, or Class D, and it iscontrolled airspace, it is Class E airspace. Class Eairspace extends upward from either the surface or adesignated altitude to the overlying or adjacentcontrolled airspace. When designated as a surfacearea, the airspace will be configured to contain allinstrument procedures. Also in this class are Federalairways, airspace beginning at either 700 or 1,200feet AGL used to transition to/from the terminal or enroute environment, en route domestic, and offshoreairspace areas designated below 18,000 feet MSL.Unless designated at a lower altitude, Class Eairspace begins at 14,500 MSL over the UnitedStates, including that airspace overlying the waterswithin 12 nautical miles of the coast of the 48contiguous States and Alaska, up to, but not including18,000 feet MSL, and the airspace above FL 600.CONTROLLED AIRSPACE [ICAO]− An airspaceof defined dimensions within which air traffic controlservice is provided to IFR flights and to VFR flightsin accordance with the airspace classification.Note: Controlled airspace is a generic term whichcovers ATS airspace Classes A, B, C, D, and E.CONTROLLED TIME OF ARRIVAL− Arrival timeassigned during a Ground Delay Program. This timemay be modified due to GDP adjustments or useroptions.CONTROLLER−(See AIR TRAFFIC CONTROL SPECIALIST.)CONTROLLER [ICAO]− A person authorized toprovide air traffic control services.CONTROLLER PILOT DATA LINK COMMU-NICATIONS (CPDLC)− A two−way digital veryhigh frequency (VHF) air/ground communicationssystem that conveys textual air traffic control messagesbetween controllers and pilots.CONVECTIVE SIGMET− A weather advisoryconcerning convective weather significant to thesafety of all aircraft. Convective SIGMETs are issuedfor tornadoes, lines of thunderstorms, embeddedthunderstorms of any intensity level, areas of thunderstormsgreater than or equal to VIP level 4 with anarea coverage of 4 / 10 (40%) or more, and hail 3 / 4 inchor greater.(See AIRMET.)(See AWW.)(See CWA.)(See SIGMET.)(Refer to AIM.)CONVECTIVE SIGNIFICANT METEOROLOG-ICAL INFORMATION−(See CONVECTIVE SIGMET.)COORDINATES− The intersection of lines of reference,usually expressed in degrees/minutes/secondsof latitude and longitude, used to determine positionor location.COORDINATION FIX− The fix in relation to whichfacilities will handoff, transfer control of an aircraft,or coordinate flight progress data. For terminalfacilities, it may also serve as a clearance for arrivingaircraft.COPTER−(See HELICOPTER.)CORRECTION− An error has been made in thetransmission and the correct version follows.COUPLED APPROACH− A coupled approach is aninstrument approach performed by the aircraft autopilotwhich is receiving position information and/orsteering commands from onboard navigation equipment.In general, coupled nonprecision approachesmust be discontinued and flown manually at altitudeslower than 50 feet below the minimum descentaltitude, and coupled precision approaches must beflown manually below 50 feet AGL.Note: Coupled and autoland approaches are flownin VFR and IFR. It is common for carriers to requiretheir crews to fly coupled approaches and autolandapproaches (if certified) when the weatherconditions are less than approximately 4,000 RVR.(See AUTOLAND APPROACH.)COURSE−a. The intended direction of flight in the horizontalplane measured in degrees from north.b. The ILS localizer signal pattern usually specifiedas the front course or the back course.PCG C−7