Description
The glide slope is an Instrument Landing System (ILS) component that provides vertical guidance—typically a three-degree descent path—to help aircraft land safely, but it can fluctuate erratically when a larger aircraft is holding near the runway takeoff point because the massive metallic airframe acts as a giant reflector that scatters, blocks, and distorts the delicate ground-transmitted radio signals, creating false beams that cause the approaching pilot's cockpit instrumentation needle to wobble