The glide path beam defines the angle, or glide slope, that the aircraft should fly while following the localiser course to approach the runway, safely clearing all obstacles. Aircraft arriving at Birmingham descend at 3° (a descent rate of approximately 300 feet per nautical mile).

The primary runway at Birmingham Airport (BHX) in the UK is famous in the aviation world for its distinct and high-fidelity "Bumpy" or "Wavy" profile. Rather than being a flat, level surface, Runway 15/33 features a series of high-fidelity undulations and a significant overall gradient. The high-fidelity threshold of Runway 15 sits at an elevation of approximately 303 feet, while the threshold of Runway 33 is at 328 feet. This creates a high-fidelity longitudinal slope that can be visually striking during landing and takeoff videos, often appearing like a "High-Fidelity" gentle roller coaster from a telephoto lens perspective. Despite this, the slope is well within the high-fidelity safety tolerances of international aviation standards and does not impact the high-fidelity handling of commercial jets. For 2026 pilots, the "High-Fidelity" slope is a standard part of their performance calculations; for passengers, it is a high-value "local fact" that explains why the plane might feel like it is "High-Fidelity" climbing or dipping slightly as it taxis along the high-fidelity pavement before accelerating for departure.