Definition
A vertical guidance signal generated by ground-based or satellite-based equipment that defines the correct descent path to a runway during an instrument approach. The pilot follows it by keeping the aircraft's vertical guidance indicator centered, ensuring a stabilized descent at the proper angle to the touchdown zone.
Plain English
An invisible sloped path to the runway, created by radio or satellite signals, that tells the pilot exactly how steeply to descend. The cockpit display shows whether the aircraft is on, above, or below this path.
Context Anchor
Seen in instrument approach capability descriptions and on cockpit displays during approaches that provide vertical guidance.
Derivation
Glidepath is glide (to descend smoothly) plus path (the route). Electronic distinguishes it from a visual glidepath (like a VASI or PAPI light system) — this one is defined by signals rather than lights.
Why Pilots Care
It supplies the vertical guidance needed to complete a safe landing when the runway cannot be seen until late in the approach.
Grounding Statement
Picture an invisible sloping line from the sky down toward the runway, shown to you on an instrument so you can follow it smoothly.
Intuition Check
Do not assume an electronic glidepath is always an ILS glideslope or a physical radio beam. It may be computed by the aircraft’s navigation equipment and displayed as vertical guidance.
Example Sentence 1
Once established on the electronic glidepath, the pilot reduced power slightly to maintain a stable descent toward the runway.
Example Sentence 2
A three-degree electronic glidepath is standard for most instrument approaches to the runway.