What type of beacon codes do not end in the numerals 00?

Discrete beacon codes are assigned to individual aircraft for identification purposes and do not end with the numerals 00. These specific codes are part of a range reserved by air traffic control, allowing clear discrimination between different aircraft on radar displays. Their unique nature enables controllers to monitor each aircraft distinctly, facilitating safer and more efficient management of airspace.

In contrast, general beacon codes may include a variety of ranges and can possibly end in 00, while emergency beacon codes, such as 7700, are specifically designated for distress situations, and primary radar returns do not utilize beacon codes in the same manner as discrete codes. This distinction emphasizes the role of discrete codes in providing consistent and unique identification for aircraft, ensuring they do not end in 00.