时间：2011-08-13 13:07来源：蓝天飞行翻译 作者：航空 点击：次
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GROUND VISIBILITY - (See Visibility) HANDOFF - An action taken to transfer the radar identification of an aircraft from one controller to another if the aircraft will enter the receiving controller's airspace and radio communications with the aircraft will be transferred. HAVE NUMBERS - Used by pilots to inform Air Traffic Control that they have received runway, wind and altimeter information only. HAZARDOUS INFLIGHT WEATHER ADVISORY SERVICE/HIWAS - A program for broadcasting hazardous weather information (Significant Meteorological Information, Convective Significant Meteorological Information, Center Weather Advisories, Airman's Meteorological Information, Severe Weather Forecast Alerts, and Urgent Pilot Weather Reports) on a continuous basis over selected VORs. HEAVY (AIRCRAFT) - (See Aircraft Classes) HEIGHT ABOVE AIRPORT/HAA - The height of the minimum descent altitude above the published airport elevation. This is published in conjunction with circling minimums. (See Minimum Descent Altitude) HEIGHT ABOVE LANDING/HAL - The height above a designated helicopter landing area used for helicopter instrument approach procedures. (Refer to Federal Air Regulations Part 97) HEIGHT ABOVE TOUCHDOWN/HAT - The height of the Decision Height or Minimum Descent Altitude above the highest runway elevation in the Touchdown Zone (first 3000 feet of the runway). HAT is published on instrument approach charts in conjunction with all straight-in minimums. (See Decision Height, Minimum Descent Altitude) HELICOPTER/COPTER (P/CG) - Rotorcraft that for its horizontal motion, depends principally on its engine driven rotors. HELICOPTER (ICAO) - A heavier-than-air aircraft supported in flight by the reactions of the air on one or more power driven rotors on substantially vertical axes. HELIPAD (P/CG) - A small, designated area, usually with a prepared surface, on a heliport, airport, landing/take-off area, apron/ramp, or movement area used for take-off, landing, or parking of helicopters. HELIPAD (JCS, NATO) - A prepared area designated and used for the take-off and landing of helicopters. (Include touchdown or hover point). HELIPORT (P/CG) - An area of land, water, or structure used or intended to be used for the landing and take-off of helicopters and includes its buildings and facilities, if any. HELIPORT (JCS, NATO) - A facility designated for operating, basing, servicing and maintaining helicopters. HERTZ/Hz - The standard radio equivalent of frequency in cycles per second of an electromagnetic wave. Kilohertz (kHz) is frequency of one thousand cycles per second. Megahertz (MHz) is a frequency of one million cycles per second. |
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