The MTR flight plan coded (FRD) IR240A+R2 (FRD) indicates what kind of site?

The coded MTR flight plan (FRD) IR240A+R2 (FRD) designates a primary Enhanced Special Use Airspace (ESS) site that includes alternative entries. The "FRD" indicates that the route is for flights conducted in accordance with flight rules, while the "IR" signifies that it is an irregular route used primarily for military operations.

In this specific coding, the presence of "240A" indicates it is a primary site, with the designation "A" suggesting an enhanced aspect, typically related to the capabilities or requirements for operations in that airspace. The added "+R2" implies that there are alternative entry points available, enhancing mission flexibility and operational efficiency.

This coding means that the airspace is primarily designated for military operations with specific entry procedures, allowing for the effective management and accounting for air traffic, especially in congested or complex environments. Hence, this reinforces its classification as a primary ESS site that accommodates alternative entries for participating military aircraft.