But English is the official language for flight operations internationally is it not?

It is. I think the concern isn't in-flight language, but rather, after
landing, when you need to find a bathroom or buy a taco. I suspect they
reasonably want you to be able to function in a Spanish speaking country
on your own.

Jose
--
Get high on gasoline: fly an airplane.
for Email, make the obvious change in the address.