Well this is from long ago memory, but it was memorable enough to last this long.
Sometime in 1969. TWA (now defunct, of course) STL-somewhere on the west coast-probably LAX. I was late and raced to the end of a very long concourse to the last gate. Door was closed, they opened the door for me and I rushed to my seat. Mechanical delayed us at least an hour.
Up in the air the menu consisted of beef filet and other stuff. Other stuff was not memorable. The beef was absolutely the best I have had on an airline in any class. May TWA and its STL chef rest in peace, I suspect the guy is now working at one of America's ten best steakhouses.