air, test, remove, and install ADS-B on the following Part 25 Aircraft. • Bombardier Inc. - CL-600-1A11, CL-600-2Al2, CL-600-2B16 (Challengers) • Gulfstream Aerospace -1125 Westwind Astra, Astra SPX, Gulfstream 100, G150 • Gulfstream - G-1159, G-1159A, G-1159B, G-IV, GV • Gulfstream - 200 • Sabreliner - NA-265-65,