FreeFlight Systems introduces new radar altimeters designed to mitigate 5G interference FreeFlight Systems Press Release | January 26, 2021 Estimated reading time 3 minutes, 42 seconds. FreeFlight Systems, a leader in high-reliability NextGen solutions, announced the release of a new series of radar altimeters for heavy rotorcraft, turboprops, business aviation, and military segments designed to mitigate 5G interference. Decades ago, when the original specification was created for the radar altimetry, the Radio Frequency (RF) environment was protected. However, with new terrestrial broadband datalink systems such as 5G, and as identified by the RTCA Special Committee, these devices may be compromised in the new environment. FreeFlight Systems’ Terrain Series, includes the RA 5500, RA 6500, and RA 7500 radar altimeters for multiple aviation markets. FreeFlight Systems Photo