-y does all planes have a ceiling altitude?
-what will happen if they fly above it?
-why does biz jets usually fly higher than airliners?
-why doesnt commercial planes fly above FL450? r they capable to do so?
-y is there an initial MTOW cruising altitude?
-y cant they climb higher than their MTOW initial alt.?
just out of my curiousity....
thanks in advance