We'd like to use analytics cookies to understand which symbols people look up, so we know what to research next. They are not used for advertising and we set none of them unless you say yes. What we store.
A horizontal needle showing position above or below the approach path.
Also known as: Glide slope needle, GS indicator, ILS glidepath display, Horizontal needle on an approach
The glideslope needle shows whether the aircraft is above or below the ideal descent path, and it is read by flying towards the needle. Its sensitivity increases as the aircraft nears the runway — the same needle deflection means a smaller error close in, which is why late corrections must be small.
Denotes the instrument display showing an aircraft's vertical position relative to an instrument landing system glide path.
Contexts: Vehicle dashboard
Is flown towards: a needle above centre means the aircraft is below the path and must climb relative to it.
Contexts: Vehicle dashboard
Becomes progressively more sensitive as the runway is approached, because the beam converges, so an identical deflection represents a smaller error close in.
Contexts: Vehicle dashboard
A horizontal needle pivoted at one side of a circular instrument face, moving up and down against a vertical scale of dots either side of a centre marker.