Fokker D.VII of Oblt. Lothar von Richthofen (40 victories), of Jasta 11 during mid-1918 Although the elder Richthofen brother didn’t survive long enough to take ownership of a Fokker D-VII, Lothar scored his final victories in this BMW-engined version (the last a pair of Sopwith Camels, of 98 & 209 Squadrons, on 12 August 1918). Severely wounded during this fight (for the third time), he had not recovered by the end of the war. Lothar died in a civil aviation accident on 4 July 1922.
May 25 American Airlines Flight 191: In Chicago, a DC-10 crashes during takeoff at O'Hare International Airport, killing all 271 on board and two people on the ground in the deadliest aviation accident in U. S. history.
On 25 May 1979, American Airlines Flight 191, following improper maintenance and the loss of an engine, a McDonnell Douglas DC-10-10, lost control and crashed near O'Hare International Airport in Des Plaines, Illinois. The crash killed all 271 passengers and crew on board, as well as two people on the ground. It remains the deadliest commercial aircraft accident in the United States history, and was also the country's deadliest aviation disaster until the September 11 attacks in 2001.
Mar 27 - 1977 – Tenerife airport disaster: Two Boeing 747 airliners collide on a foggy runway on Tenerife in the Canary Islands, killing 583 (all 248 on KLM and 335 on Pan Am). 61 survived on the Pan Am flight. This is the worst aviation accident in history.