ATI T-18 Practice Test 2026 - Free ATI T-18 Practice Questions and Study Guide

Most Navy aircraft are equipped with two TACAN (Tactical Air Navigation) antennas to ensure reliable navigation performance. The reason for having two antennas is to enhance the accuracy of the navigation system by allowing for redundancy and improved signal reception. This configuration helps in maintaining continuous navigational data, especially in varying operational environments where one antenna might experience interference or degradation in performance.

The design of having two antennas not only enhances the reliability of the navigation signals but also allows the system to compute location more accurately. This is critical for military operations, where precision and reliability may impact mission success.