Yes, it does not matter which territory the troops on the transport are invading. The amphibious assault is in the sea zone adjacent to a territory with an airbase, which is all that is required.
Marsh
Italy has a navy in zone 110 uncontested, on Germanys turn they bring in transports and ships for an amphib on UK in same sea zone as Italian fleet. Does the Italian fleet defend against the scramble from UK?
Italy has a navy in zone 110 uncontested, on Germanys turn they bring in transports and ships for an amphib on UK in same sea zone as Italian fleet. Does the Italian fleet defend against the scramble from UK?
No. The scrambling is defense against Germany’s attack. So like all other battles, friendly units in the seazone are not included. On offense, only one power is involved. On defense, multiple powers are involved.