.
see also : wide area augmentation system (WAAS)

Fr: système de renforcement à couverture locale
localizer The component of an instrument landing system (ILS) that provides lateral guidance with respect to the runway centreline.
. abbreviation: LOC
Fr: radiophare d’alignement de piste
localizer type directional aid U.S.: A NAVAID which is used for nonprecision [sic] instrument approaches with utility and accuracy comparable to a localizer but which is not a part of a complete instrument landing system (ILS) and is not aligned with the runway.
. abbreviation: LDA
localizer usable distance The maximum distance from the localizer transmitter at a specified altitude, as verified by flight inspection, at which reliable course information is continously received. Fr: distance maximale de réception du radiophare d’alignement de piste
local traffic Aircraft operating in the aerodrome traffic circuit or within sight of the control tower, aircraft known to be departing for or arriving from flight in local practice areas, or aircraft executing simulated approaches at the airport. Fr: trafic local
location indicator A four-letter code group formulated in accordance with rules prescribed by ICAO and assigned to the location of an aeronautical fixed station. Fr: indicateur d’emplacement