I believe they're printed.
The windows on the side of the aircraft are stickers too - I was hoping for new window moulds...
Still, the cockpit window can be swapped out for one of the clear blue ones from the city airliner, police helicopter or space shuttle sets.
Funny - TLG will put stickers in $400 UCS sets instead of printing like collectors and modellers want, and print on the pieces that we don't want printed for cheap sets. I'd have preferred a blank black windscreen to match the other black parts in this jet...guess TLG doesn't trust kids to not eat the stickers.