FAA Mulls Recommendations for Planned GPS Interference

摘要

The FAA says it is studying the recommendations a special committee issued earlier this year to better notify aircraft operators of planned GPS-signal-interference events caused by Defense Department testing. Loss or degradation of GPS signal reception because of interference could affect pilots' use of GPS-based required navigation performance (RNP) procedures, disable terrain awareness and warning systems, and degrade pitch and roll accuracy of GPS-aided attitude and heading reference systems, among other issues, a Tactical Operations Committee (TOC) of FAA and industry experts advised in a March report.Loss of GPS in an aircraft equipped to report its position via automatic dependent surveillance-broadcast (ADS-B) "Out," a capability the FAA requires by 2020, causes that aircraft to be lost as a target for onboard ADS-B "In" systems. Thisaffects aircraft depending on satellite-based augmentation systems for precision approaches and presents a problem for the FAA's strategy to decommission some secondary surveillance radars (SSR) as ADS-B becomes its primary means of surveillance. The FAA is considering decommissioning 80% of terminal radars as ADS-B equipage by aircraft operators increases, the TOC says.