June 11, 1948

Air Force Regulation 65-60 is published, which changes the designations for several Air Force aircraft. Fighters will now have the prefix “F” instead of “P” for pursuit (which dated back to 1925); reconnaissance aircraft will now be designated “R” instead of “F” (ostensibly for “fotographic,” which dated back to 1930); and helicopters will now be designated “H” instead of “R” (for rotary wing). P-80s, P- 82s, and P-84s will now be called F-80s, F-82s, and F-84s.