B2, F117, B52, P9, F22, F14, F18, C130, C17, C5, CH47, AH-64, SR71, U2, A10, and on and on just to give some recent examples.
There are a few single engine aircraft roles (including the F104), but they are not and have never been the bulk of active serving aircraft. It isn’t just ‘technically’ true.
There are a few single engine aircraft roles (including the F104), but they are not and have never been the bulk of active serving aircraft. It isn’t just ‘technically’ true.