Same is true with FedEx. You must have a current (within 2 years) FE written when you start class. I would get it current asap whether you can fill out the app or not. I think you can apply without it current, but you won't get an interview or class date without a current written. FedEx will not accept the part 121 continuous employment waiver except in very rare circumstances (like military guys deployed for the past 6 month).

Good luck.