Glossary
Navigation & Airspace
Glideslope (GS)
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Definition
The vertical component of an ILS providing descent guidance to the runway
Related Terms
Decision Height (DH)
The altitude during a precision approach at which the pilot must decide to land or go around
ILS Localizer Antenna (LOC)
A ground-based radio transmitter providing horizontal guidance for precision approaches
Instrument Landing System (ILS)
A precision approach system using radio signals to guide aircraft to a runway in poor visibility
PAPI (PAPI)
Precision Approach Path Indicator — a visual aid providing glidepath guidance during approach
Frequently Asked Questions
What is Glideslope (GS)?
The vertical component of an ILS providing descent guidance to the runway
What does GS stand for?
GS stands for Glideslope (GS). The vertical component of an ILS providing descent guidance to the runway
How does Glideslope (GS) relate to other aviation concepts?
Glideslope (GS) is closely related to Decision Height and ILS Localizer Antenna, among other key aviation concepts.
More in Navigation & Airspace
Airspace Classification
Airway (AWY)
Approach Procedure
Area Navigation (RNAV)
Decision Height (DH)
Distance Measuring Equipment (DME)
Flight Information Region (FIR)
Flight Level (FL)
GPS Navigation (GPS)
Instrument Landing System (ILS)
Minimum Safe Altitude (MSA)
Missed Approach
Non-Directional Beacon (NDB)
Required Navigation Performance (RNP)
Squawk Code
Standard Instrument Departure (SID)
Standard Terminal Arrival Route (STAR)
Transition Altitude (TA)
Transponder (XPDR)
VHF Omnidirectional Range (VOR)
Waypoint (WPT)