There is always restrictions on Carrier AC that are not on concrete
jumpers.

There are conditions when T/O weight and wind + density altitude conspire to
make a very long stretch of concrete seem very short. As the A-7 was not
endowed with prodigious quantities of thrust, a heavy takeoff on a hot day
could be thrilling. Throw in a few thousand feet of field elevation and
you'd best enter your T/O tables in the big thick book.

Max gross is often a structural or wt/balance consideration w/o regard for
T/O issues. I was fortunate to never fly an aircraft that was relatively
underpowered ... a heavy A-7 was.

R / John