FCC Proposed Expansion Of Radio Frequency Could Interfere With Altimeters Two aviation groups have expressed concerns about the potential cost of aircraft having to replace radio altimeters if the Federal Communication Commission (FCC) moves forward with a proposed plan to expand certain radio frequencies.The National Business Aviation Association (NBAA) and the National Air Transportation Association (NATA) are urging the FCC to employ its “emerging technologies framework” to Part 91 and Part 135 operators to ensure business aviation safety, equitable cost allocation and the orderly deployment of Upper C-Band wireless services. The FCC has proposed expansion to the Upper C-Band, which could interfere with aircraft radio altimeters. The commission aims to expand next-generation wireless services in the Upper C-Band (3.8-4.2 gigahertz) by not less than 100 megahertz, and as much as 180 for terrestrial flexible wireless use.
