Starting Jan.1, 2020 in aircraft that fly in the U.S. under IFR and where transponders are currently required, namely class A, B and C airspace ADS-B out equipment must be operational.
By iapba-user
Starting Jan.1, 2020 in aircraft that fly in the U.S. under IFR and where transponders are currently required, namely class A, B and C airspace ADS-B out equipment must be operational.