Instrument Landing System (ILS) Localizer (GA091)

DGIF baseline 2026-1, the latest. Earlier baselines: timemap.

Name

InstLandingSysLocalizer

Kind

FeatureType

Definition

A component of an Instrument Landing System (ILS) consisting of a VHF transmitter, radiating signals in the direction served by the ILS, and providing a straight line azimuth path in the horizontal plane containing the centre line of the runway.

Accepted

2013-10-18

Geometry

point, multipoint, curve, multicurve, surface, multisurface, solid, multisolid

Subtype of

GA033 Aeronautical Radio Navigation Installation

Attributes

LBU Backcourse Localizer Use Type — multiplicity 0..1; datatype InstLandingSysLocalizer_backcourseLocalizerUseTypeMeta; values: LBU_1 No, LBU_2 Yes, LBU_3 Restricted
ILC Instrument Landing System (ILS) Facility Performance Category — multiplicity 0..1; datatype InstLandingSysLocalizer_ilsFacilityPerformanceCatMeta; values: ILC_1 Category I Operations (CAT I), ILC_2 Category II Operations (CAT II), ILC_3 Category III operations (CAT III), ILC_4 Category IIIa Operations (CAT IIIa), ILC_5 Category IIIb Operations (CAT IIIb), ILC_6 Category IIIc Operations (CAT IIIc), ILC_7 MLS Category I Operations (CAT I)
CLW Localizer Course Width — multiplicity 0..1; datatype AngleMeasureMeta
LCW Localizer Course Width Accuracy — multiplicity 0..1; datatype MeasureMeta
BEA Magnetic Bearing — multiplicity 0..1; datatype AngleMeasureMeta
MBA Magnetic Bearing Accuracy — multiplicity 0..1; datatype AngleMeasureMeta
TBE True Bearing — multiplicity 0..1; datatype AngleMeasureMeta
TBA True Bearing Accuracy — multiplicity 0..1; datatype AngleMeasureMeta

Associations

InstLandingSysLocalizerMagneticVariationInfo → ZI103 Magnetic Variation Information (0..*)
InstLandingSysLocalizerRadioTransmissionInfo → ZI101 Radio Transmission Information (0..*)

RWOI terms naming it

RWO_01743 Instrument Landing System (ILS) Localizer