Company, Observatory Disagree on Use of 90 GHz Frequencies for Flight Vision Systems
Sierra Nevada Corp. (SNC) asked the FCC to ignore objections by Haystack Observatory at the Massachusetts Institute of Technology to its proposed use of 92-95.5 GHz spectrum for enhanced flight vision systems (EFVS) on aircraft. “EFVS with 95 GHz radar…
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will provide great public benefits in assisting pilots with landing aircraft during degraded visual situations where aircraft otherwise may be unable to land,” SNC said in a filing posted Friday in docket 19-140. Haystack raised objections twice, most recently in a filing dated June 2019. “It has come to our attention that the proposed use of airborne radars at 92-95.5 GHz as laid out in the Docket is likely to cause harmful interference to radio astronomy observations at our facility,” the observatory said. “Haystack’s statement is highly overblown, and it would be draconian to deny authority for EFVS radar everywhere in the U.S. solely to protect one site,” SNC said.