You have to enter pilot training (class start date) by your 30th birthday, not sign on, not enter OTS, enter UPT. Used to was be 271/2, so age waivers are hard to come by, usually limited to navs, etc. it's not a "unit" limit, it's an AF rule.

I tried to get an age waiver for an in-unit enlisted crew who couldn't finish college because he was activated by the AF (Desert Storm)--no deal. He went on to be a "wrench" on Gemini DC-10 freighters, got his pilot licenses and fled F/O with them.

GF