When operating near an airport with a control tower, a pilot in Class E airspace must establish communication prior to which distance?

The requirement for a pilot in Class E airspace to establish communication with air traffic control prior to reaching a specified distance from an airport with a control tower is crucial for ensuring safe and efficient operations. The correct answer indicates that communication must be established within 4 nautical miles of the airport and up to and including 2,500 feet above ground level (AGL).

This regulation is in place to manage air traffic effectively as aircraft approach controlled environments. By requiring pilots to communicate before they enter a critical proximity to the airport, it enhances coordination with air traffic controllers who provide important information about the traffic situation, runway use, and any other operational changes that might affect the pilot's approach.

While other options provide different distances and altitudes, they do not align with the established procedures and guidelines set forth for Class E operations near controlled airports. Understanding the specific distance and altitude at which communication must be established helps pilots maintain situational awareness and ensures they are adhering to air traffic control protocols, ultimately promoting safety in the airspace system.