What does ILS stand for in the context of aviation?

In aviation, ILS stands for Instrument Landing System. This is a precision approach system that provides guidance to pilots as they land, particularly in low visibility conditions. The ILS helps ensure that the aircraft is aligned with the runway both laterally and vertically, allowing for a safer and more accurate landing.

This system works by transmitting signals from the ground to the aircraft, which the pilots can then use to determine their position relative to the runway. It consists of two main components: the localizer, which provides lateral guidance, and the glide slope, which offers vertical guidance.

While the other options could sound plausible in a general context, they do not accurately reflect the established terminology and functionality defined in aviation standards. The Integrated Landing System, Intermittent Landing System, and Internal Landing Support are not recognized terms within the framework of aviation regulations or procedures.