Before revision: These radars were formally approved under the FAA TSO-65a until 2013, and are designed in accordance with The Radio Technical Commission for Aeronautics (RTCA) DO-158 standard titled Minimum Performance Standards − Airborne Doppler Radar Navigation Equipment.
After revision: these radars were formally approved under the FAA TSO-65a until 2013, and are designed in accordance with The Radio Technical Commission for Aeronautics (RTCA) DO-158 standard titled Minimum Performance Standards − Airborne Doppler Radar Navigation Equipment.