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Order 7110.65P, Air Traffic Control, with changes

Order 7110.65P, Air Traffic Control, with changes

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8/5/04Pilot/<strong>Control</strong>ler GlossaryHHAA−(See HEIGHT ABOVE AIRPORT.)HAL−(See HEIGHT ABOVE LANDING.)HANDOFF− An action taken to transfer the radaridentification of an aircraft from one controller toanother if the aircraft will enter the receivingcontroller’s airspace and radio communications <strong>with</strong>the aircraft will be transferred.HAR−(See HIGH ALTITUDE REDESIGN.)HAT−(See HEIGHT ABOVE TOUCHDOWN.)HAVE NUMBERS− Used by pilots to inform ATCthat they have received runway, wind, and altimeterinformation only.HAZARDOUS INFLIGHT WEATHER ADVISO-RY SERVICE− Continuous recorded hazardousinflight weather forecasts broadcasted to airbornepilots over selected VOR outlets defined as anHIWAS BROADCAST AREA.HAZARDOUS WEATHER INFORMATION−Summary of significant meteorological information(SIGMET/WS), convective significant meteorologicalinformation (convective SIGMET/WST), urgentpilot weather reports (urgent PIREP/UUA), centerweather advisories (CWA), airmen’s meteorologicalinformation (AIRMET/WA) and any other weathersuch as isolated thunderstorms that are rapidlydeveloping and increasing in intensity, or lowceilings and visibilities that are becoming widespreadwhich is considered significant and are notincluded in a current hazardous weather advisory.HEAVY (AIRCRAFT)−(See AIRCRAFT CLASSES.)HEIGHT ABOVE AIRPORT− The height of theMinimum Descent Altitude above the publishedairport elevation. This is published in conjunction<strong>with</strong> circling minimums.(See MINIMUM DESCENT ALTITUDE.)HEIGHT ABOVE LANDING− The height above adesignated helicopter landing area used for helicopterinstrument approach procedures.(Refer to 14 CFR Part 97.)HEIGHT ABOVE TOUCHDOWN− The height ofthe Decision Height or Minimum Descent Altitudeabove the highest runway elevation in the touchdownzone (first 3,000 feet of the runway). HAT ispublished on instrument approach charts in conjunction<strong>with</strong> all straight-in minimums.(See DECISION HEIGHT.)(See MINIMUM DESCENT ALTITUDE.)HELICOPTER− Rotorcraft that, for its horizontalmotion, depends principally on its engine-drivenrotors.(See ICAO term HELICOPTER.)HELICOPTER [ICAO]− A heavier-than-air aircraftsupported in flight chiefly by the reactions of the airon one or more power-driven rotors on substantiallyvertical axes.HELIPAD− A small, designated area, usually <strong>with</strong> aprepared surface, on a heliport, airport, landing/takeoffarea, apron/ramp, or movement area used fortakeoff, landing, or parking of helicopters.HELIPORT− An area of land, water, or structure usedor intended to be used for the landing and takeoff ofhelicopters and includes its buildings and facilities ifany.HELIPORT REFERENCE POINT (HRP)− Thegeographic center of a heliport.HERTZ− The standard radio equivalent of frequencyin cycles per second of an electromagnetic wave.Kilohertz (KHz) is a frequency of one thousandcycles per second. Megahertz (MHz) is a frequencyof one million cycles per second.HF−(See HIGH FREQUENCY.)HF COMMUNICATIONS−(See HIGH FREQUENCY COMMUNICATIONS.)HIGH ALTITUDE REDESIGN (HAR)− A level ofnon−restrictive routing (NRR) service for aircraftthat have all waypoints associated <strong>with</strong> the HARprogram in their flight management systems orRNAV equipage.PCG H−1

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