What does ILS stand for?

The term ILS stands for Instrument Landing System. This system is essential for guiding aircraft during the approach and landing phases, particularly in low visibility conditions. It uses a combination of radio signals and high-precision technology to provide aircraft with both lateral (glide path) and vertical (localizer) guidance to the runway. The ILS helps ensure that pilots can safely navigate to the runway even when visual cues are minimal, thus enhancing safety and efficiency in aviation operations.

Other options are not accurate representations of what ILS entails. The "Intermittent Landing System" and "Integrated Landing Support" do not exist within the aviation standard terminology, and "International Landing System," while it may seem plausible, does not reflect the widely recognized meaning of ILS as established by aviation regulatory bodies.