30.04.1938 During the Spanish Civil War (1936-1939), the battleship ESPANA of the Nationalist's navy was bombed and sunk by a Gourdrou Lesseurre GL-32 of the Republic Air Force, piloted by the ace Miguel Zambudio (17 victories). Loire-Gourdou-Lesseure LGL-32/GL-633
30.04.1942 Maiden Flight of Fiat G.55 "Centauro", one of the best Italian fighters of WW2 but comes too late to have a mayor impact over the course of the war. Anyway it was used by RSI air force with some success against the Allied forces. Fiat G.55/G.56/G.59 Centauro
30.04.1975 The last combat sorties of (then dying) VNAF. An AC-119 Shadow Gunship and two Skyraiders attack the NVA troops around Tan Son Nhut AB. The Gunship was later shoot down by a SA-7 Strela missile, becoming the last VNAF plane lost to enemy action. Douglas AD/A-1 Skyraider Fairchild C-82/C-119 Packet/Flying Boxcar