April 1 / Royal Air Force Founded
April 1 / Romanian Air Force Founded
April 1 / T-6 Texan First Flight
April 2 / Kaman SH-2G Super Seasprite First Flight
April 4 / NATO Formed
April 5 / C-130J Super Hercules First Flight
April 5 / Russian Knights Founded
April 5 / Aero L-29 Delfin First Flight
April 6 / Bell P-39 Airacobra First Flight
April 7 / Aerospatiale Gazelle First Flight
April 10 / SIAI-Marchetti S.211 First Flight
April 10 / Northrop T-38 Talon First Flight
April 12 / Pilatus PC-7 First Flight
April 12 / Bristol Blenheim First Flight
April 15 / Aerospatiale SA 330 Puma First Flight
April 15 / Team Orlik First Display
April 15 / Boeing B-52 Stratofortress First Flight
April 16 / Let L-410 Turbolet First Flight
April 17 / Fairey Swordfish First Flight
April 17 / de Havilland Dragon Rapide First Flight
April 26 / World Pilots' Day
April 27 / Eurocopter Tiger First Flight
April 27 / Pilatus P-2 First Flight
April 30 / Northrop F-5 First Flight
