Aviation and air traffic control terminology · MLC-0104
Aviation and air traffic control terms: H (31)
- HAA, see Height above airport (HAA)
- HAL, see Height above landing (HAL)
- HandoffAn action taken to transfer the radar identification of an aircraft from one controller to another if the...
- HAT, see Height above touchdown (HAT)
- Have numbersUsed by pilots to inform ATC that they have received runway, wind, and altimeter information only.
- Hazardous materials (HAZMAT)Hazardous materials as defined by 49 Code of Federal Regulations (CFR) §171.8.
- Hazardous weather informationSummary of significant meteorological information (SIGMET/WS), convective significant meteorological...
- HAZMAT, see Hazardous materials (HAZMAT)
- 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...
- Height above landing (HAL)The height above a designated helicopter landing area used for helicopter instrument approach procedures.
- Height above touchdown (HAT)The height of the Decision Height or Minimum Descent Altitude above the highest runway elevation in the...
- HelicopterA rotorcraft that, for its horizontal motion, depends principally on its engine-driven rotors.
- HelipadA small, designated area, usually with a prepared surface, on a heliport, airport, landing/takeoff area...
- HeliportAn area of land, water, or structure used or intended to be used for the landing and takeoff of helicopters...
- Heliport reference point (HRP)The geographic center of a heliport.
- HertzThe standard radio equivalent of frequency in cycles per second of an electromagnetic wave. Kilohertz (kHz)...
- HF, see High frequency
- HF communications, see High frequency communications
- High frequencyThe frequency band between 3 and 30 MHz.
- High frequency communicationsHigh radio frequencies (HF) between 3 and 30 MHz used for air-to-ground voice communication in overseas...
- High speed exit, see High speed taxiway
- High speed taxiwayA long radius taxiway designed and provided with lighting or marking to define the path of aircraft...
- High speed turnoff, see High speed taxiway
- High update rate surveillanceA surveillance system that provides a sensor update rate of less than 4.8 seconds.
- Hold for releaseUsed by ATC to delay an aircraft for traffic management reasons; i.e., weather, traffic volume, etc. Hold for...
- Hold procedureA predetermined maneuver which keeps aircraft within a specified airspace while awaiting further clearance...
- Holding fixA specified fix identifiable to a pilot by NAVAIDs or visual reference to the ground used as a reference...
- Holding point [ICAO]A specified location, identified by visual or other means, in the vicinity of which the position of an...
- Holding procedure, see Hold procedure
- Hold-in-lieu of procedure turnA hold-in-lieu of procedure turn must be established over a final or intermediate fix when an approach can be...
- Hold-short pointA point on the runway beyond which a landing aircraft with a LAHSO clearance is not authorized to proceed...
- Hold-short position lightsFlashing in-pavement white lights located at specified hold-short points.
- Hold-short position markingThe painted runway marking located at the hold-short point on all LAHSO runways.
- Hold-short position signsRed and white holding position signs located alongside the hold-short point.
- HomingFlight toward a NAVAID, without correcting for wind, by adjusting the aircraft heading to maintain a relative...
- Homing [ICAO]The procedure of using the direction-finding equipment of one radio station with the emission of another...
- Hot spotA location on an airport movement area with a history of potential risk of collision or runway incursion, and...
- Hover checkUsed to describe when a helicopter/VTOL aircraft requires a stabilized hover to conduct a performance/power...
- Hover taxiUsed to describe a helicopter/VTOL aircraft movement conducted above the surface and in ground effect at...
- How do you hear me?A question relating to the quality of the transmission or to determine how well the transmission is being...
- Hz, see Hertz
31 of 1,122 terms in Aviation and air traffic control terminology (MLC-0104). Request the full dataset.