Why is ADS-B required at MSP?

The requirement for ADS-B (Automatic Dependent Surveillance–Broadcast) at MSP (Minneapolis–Saint Paul International Airport) is primarily due to the type of airspace in which the airport is located. Specific airspace classifications, particularly class B airspace, necessitate advanced surveillance capabilities to maintain the safety and separation of aircraft operating in that area. ADS-B provides real-time information about the position of aircraft, enhancing situational awareness for all users in busy airspace.

By ensuring that all aircraft operating in this type of airspace are equipped with ADS-B, air traffic control can effectively manage the high volume of traffic, ensuring safe operations, especially in proximity to major airports where there is a mix of commercial and general aviation traffic. This requirement helps reduce the potential for mid-air collisions and improves overall air traffic efficiency.

The other options do not encompass the primary reason why ADS-B is mandated at MSP, as the requirement isn't limited to daytime operations, isn't specifically excluded for air carrier operations, and isn't universally applied at all altitudes without consideration of the airspace classification.