15 December 1955 : The de Havilland Mosquito flies its final operational sortie with the Royal Air Force
15 December 1954 : Orenda Iroquois jet engine, designed for the Avro Canada CF-105 Arrow, made its first test run.
15 December 1951 : No. 421 Sqron returned after training in England and was relocated at St. Hubert, Quebec. They were re-equipped with North American F-86 Sabre fighters.
15 December 1951 : Introduction: Lockheed L-1049 Super Constellation
15 December 1948 : First flight of the Northrop X-4 Bantam
15 December 1948 : No. 2401 Radar Sqron (Auxiliary) – Later designated Aircraft Control and Warning Sqron – was formed at Montreal.
15 December 1944 : Noorduyn Norseman, 44-70285, c/n 550, disappears over the English Channel with Maj. Glenn Miller, pilot John Morgan and Lt. Col. Norman Baessell on board after departing RAF Twinwood Farm, Clapham, Bedfordshire, England. Missing Air Crew Report (MACR) 10770. It is believed that the plane was lost by straying into a forbidden zone in mid-channel which was designated for the jettisoning of surplus ordnance. On that day, a sqron of RAF Avro Lancasters had aborted a mission and were salvoing their bombloads in this zone. One crewman, a navigator, claims to have looked down and seen a Norseman flying low over the water. Before he could draw any attention to this, the Norseman was apparently overwhelmed by bomb splashes and disappeared. Other conspiracy theories about the disappearance have also been advanced.
15 December 1944 : U. S. forces land on Mindoro. Over the next 30 days, there will be 334 alerts of Japanese air attack on the beachhead. Kamikaze attacks begin immediately, and persist until January 4, 1945.
15 December 1943 : Boeing FortressBoeing Fortress of No. 168 (HT) Squadron, piloted by W/C RB Middleton, left Rockcliffe, Ontario with mail for Canadian servicemen overseas. This began RCAF air transport operations on a global scale.
15 December 1943 : (15-25) Japanese aircraft at Rabaul bomb U. S. forces on Bougainville nightly, killing 38 and wounding 136.
15 December 1943 : Fifth Air Force aircraft cover U. S. Army landings at Arawe. A strike on the landing forces by 64 Japanese naval aircraft is unsuccessful.
15 December 1941 : The RCAF No. 419(B) Squadron formed with Wellington IC aircraft.
15 December 1940 : In 1944, a single-engine plane carrying bandleader Glenn Miller, who was a major in the U. S. Army Air Forces, disappeared over the English Channel while en route to Paris.
15 December 1939 : First flight of the SNCASE Languedoc
15 December 1937 : A Spanish Republican offensive in the area of Teruel, Spain, begins. The ensuing Battle of Teruel will last until February 22, 1938, and involve 120 fighters, 80 bombers, and 100 other aircraft on the Republican side and 150 fighters, 100 bombers, and 110 other aircraft on the Nationalist side.