Then, 1.6 seconds before touchdown, the aircraft “was slightly below the glide slope” — a system that guides an aircraft down to the runway during landing for a controlled descent. The right main ...

Naval aviators know that traffic light as the Improved Fresnel Lens Optical Landing System. A pilot uses IFLOLS to discern his glide slope—the angle at which aircraft descend and land—by ...

Then, 1.6 seconds before touchdown, the aircraft “was slightly below the glide slope” — a system that guides an aircraft down to the runway during landing for a controlled descent.