An electronic navigation system that allows aircraft to approach and land during inclement weather conditions is called?

The instrument landing system (ILS) is crucial for enabling aircraft to approach and land safely in poor weather conditions, such as low visibility from fog, rain, or snow. This system uses a combination of radio signals and ground equipment to provide precise lateral and vertical guidance to pilots as they approach the runway. The ILS includes a localizer, which helps the aircraft align with the runway centerline, and a glideslope, which provides information on the proper descent angle.

In contrast, while the global positioning system (GPS) offers navigation capabilities, it does not specifically cater to the approach and landing phase under adverse weather; it is primarily for overall navigation. A heads-up display (HUD) enhances situational awareness for pilots during various flight phases but is not a navigation system that enables landing in bad weather. A self-contained navigation system (SCNS) may provide navigational data, but it does not have the precision and reliability required for instrument approaches comparable to the ILS. Thus, ILS stands out as the specialized system designed for safe landings in challenging weather conditions.