Aviation and air traffic control terminology · MLC-0104
Aviation and air traffic control terms: L (36)
- LAA, see Local airport advisory (LAA)
- LAANC, see Low altitude authorization and notification capability (LAANC)
- LAHSO, see Land and hold short operations
- Land and hold short operationsOperations that include simultaneous takeoffs and landings and/or simultaneous landings when a landing...
- Land-based air defense identification zone (ADIZ)An ADIZ over U.S. metropolitan areas, which is activated and deactivated as needed, with dimensions...
- Landing areaAny locality either on land, water, or structures, including airports/heliports and intermediate landing...
- Landing area [ICAO]That part of a movement area intended for the landing or take-off of aircraft.
- Landing direction indicatorA device which visually indicates the direction in which landings and takeoffs should be made.
- Landing distance available [ICAO]The length of runway which is declared available and suitable for the ground run of an aeroplane landing.
- Landing distance available (LDA)The runway length declared available and suitable for a landing airplane.
- Landing minimumsThe minimum visibility prescribed for landing a civil aircraft while using an instrument approach procedure...
- Landing rollThe distance from the point of touchdown to the point where the aircraft can be brought to a stop or exit the...
- Landing sequenceThe order in which aircraft are positioned for landing.
- Last assigned altitudeThe last altitude/flight level assigned by ATC and acknowledged by the pilot.
- Lateral navigation (LNAV)A function of area navigation (RNAV) equipment which calculates, displays, and provides lateral guidance to a...
- Lateral separationThe lateral spacing of aircraft at the same altitude by requiring operation on different routes or in...
- LDA, see Localizer type directional aid (LDA); Landing distance available (LDA); Landing distance available [ICAO]
- LF, see Low frequency (LF)
- Light gunA handheld directional light signaling device which emits a brilliant narrow beam of white, green, or red...
- Lighted airportAn airport where runway and obstruction lighting is available.
- Light-sport aircraft (LSA)An FAA-registered aircraft, other than a helicopter or powered-lift, that meets certain weight and...
- Line up and wait (LUAW)Used by ATC to inform a pilot to taxi onto the departure runway to line up and wait. It is not authorization...
- Local airport advisory (LAA)A service available only in Alaska and provided by facilities that are located on the landing airport, have a...
- Local trafficAircraft operating in the traffic pattern or within sight of the tower, or aircraft known to be departing or...
- LocalizerThe component of an ILS which provides course guidance to the runway.
- Localizer course [ICAO]The locus of points, in any given horizontal plane, at which the DDM (difference in depth of modulation) is...
- Localizer offsetAn angular offset of the localizer aligned within 3° of the runway alignment.
- Localizer performance with vertical guidance (LPV)A type of approach with vertical guidance (APV) based on WAAS, published on RNAV (GPS) approach charts. This...
- Localizer type directional aid (LDA)A localizer with an angular offset that exceeds 3° of the runway alignment, used for nonprecision instrument...
- Localizer type directional aid (LDA) precision runway monitor (PRM) approachAn approach, which includes a glideslope, used in conjunction with an ILS PRM, RNAV PRM or GLS PRM approach...
- Localizer usable distanceThe maximum distance from the localizer transmitter at a specified altitude, as verified by flight...
- Locator [ICAO]An LM/MF NDB used as an aid to final approach.
- Long range navigation, see LORAN
- Longitudinal separationThe longitudinal spacing of aircraft at the same altitude by a minimum distance expressed in units of time or...
- LORANAn electronic navigational system by which hyperbolic lines of position are determined by measuring the...
- Lost communicationsLoss of the ability to communicate by radio. Aircraft are sometimes referred to as NORDO (No Radio). Standard...
- Lost link (LL)An interruption or loss of the control link, or when the pilot is unable to effect control of the aircraft...
- Lost link procedurePreprogrammed or predetermined mitigations to ensure the continued safe operation of the UA in the event of a...
- Low altitude airway structureThe network of airways serving aircraft operations up to but not including 18,000 feet MSL.
- Low altitude alert, check your altitude immediately, see Safety alert
- Low altitude authorization and notification capability (LAANC)FAA and industry collaboration which automates the process of obtaining a required authorization for...
- Low approachAn approach over an airport or runway following an instrument approach or a VFR approach including the...
- Low frequency (LF)The frequency band between 30 and 300 kHz.
- LUAW, see Line up and wait (LUAW)
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