It's interesting to see HN discover this routine test; the Phenom warning is boilerplate. https://pilotweb.nas.faa.gov/PilotWeb/noticesAction.do?queryType=ALLG

It's interesting to see HN discover this routine test; the Phenom warning is boilerplate. https://pilotweb.nas.faa.gov/PilotWeb/noticesAction.do?queryType=ALLGPS&formatType=DOMESTIC https://pilotweb.nas.faa.gov/PilotWeb/noticesAction.do?query... The Coast Guard is the middleman for the DoD, obtaining FAA approval for the tests and coordinating shut down of the tests in emergencies. http://navcen.uscg.gov/?pageName=gpsServiceInterruptions http://navcen.uscg.gov/?pageName=gpsServiceInterruptions