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Visual Approach Slope Indicator System (VASIS) (GB480)

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

RDF: gb480.ttl

Name

VisualAppSlopeIndSystem

Kind

FeatureType

Definition

An airport lighting facility providing vertical approach slope guidance to aircraft during approach to landing.

Description

A directional pattern of high intensity red and white focused light beams which indicate to the pilot that they are either: 'on path' if they see red/white; 'above path' if white/white; and 'below path' if red/red.

Synonyms

VASIS

Accepted

2013-10-18

Geometry

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

Subtype of

ZI028 Feature Entity

Attributes

COS Facility Operational Status — multiplicity 0..1; datatype VisualAppSlopeIndSystem_facilityOperationalStatusMeta; values: COS_13 Operational, COS_14 Partially Operational, COS_4 Non-operational, COS_6 Planned, COS_8 Not in Operation, COS_9 Temporarily Non-operational
LIS Light System Intensity — multiplicity 0..1; datatype VisualAppSlopeIndSystem_lightSystemIntensityMeta; values: LIS_1 High, LIS_2 Medium, LIS_3 Low
LIV Light System Intensity Variability — multiplicity 0..1; datatype VisualAppSlopeIndSystem_lightSystemIntVariableMeta; values: LIV_1 Variable, LIV_2 Fixed
PCO Pilot Controlled Lighting (PCL) — multiplicity 0..1; datatype BooleanMeta
VS2 Visual Approach Slope Indicator System (VASIS) Approach Slope — multiplicity 0..1; datatype AngleMeasureMeta
VS3 Visual Approach Slope Indicator System (VASIS) Number of Units — multiplicity 0..1; datatype IntegerMeta
VS1 Visual Approach Slope Indicator System (VASIS) Type — multiplicity 0..1; datatype VisualAppSlopeIndSystem_vasisTypeMeta; values: VS1_1 3 Bar Abbreviated 'T'-shaped VASIS, VS1_10 Multiple Identical Light Units, VS1_11 Optical Landing System (OLS), VS1_12 Precision Approach Path Indicator (PAPI), VS1_13 Pulsating VASI, VS1_14 'T'-shaped VASIS, VS1_15 Tri-colour VASI, VS1_2 3 Bar Abbreviated VASIS, VS1_3 3 Bar VASIS, VS1_4 2 Bar VASIS, VS1_5 Abbreviated PAPI, VS1_6 Abbreviated 'T'-shaped VASIS, VS1_7 Abbreviated VASIS, VS1_8 Helicopter Approach Path Indicator (HAPI), VS1_9 Low Cost VASI

Associations

RunwayDirectionVisualAppSlopeIndSystem → GB052 Runway Direction ()

RWOI terms naming it

RWO_00001 2 Bar VASIS
RWO_00002 3 Bar Abbreviated 'T'-shaped VASIS
RWO_00003 3 Bar Abbreviated VASIS
RWO_00004 3 Bar VASIS
RWO_00011 Abbreviated PAPI
RWO_00012 Abbreviated 'T'-shaped VASIS
RWO_00013 Abbreviated VASIS
RWO_01571 Helicopter Approach Path Indicator (HAPI)
RWO_02016 Low Cost VASI
RWO_02324 Multiple Identical Light Units
RWO_02518 Optical Landing System (OLS)
RWO_02580 PAPI
RWO_02779 Precision Approach Path Indicator (PAPI)
RWO_02851 Pulsating VASI
RWO_03891 Tri-colour VASI
RWO_03907 'T'-shaped VASIS
RWO_03982 VASIS
RWO_04011 Visual Approach Slope Indicator System (VASIS)
RWO_05259 VASI