If the OP used an interview prep company, call them asap. If not call one of them asap and pay for some counseling.

I don't know the right answer and here's why...

At face value, did you lie on the app? No.

Did you lie at the interview? No.

Did you lie about anything, at any time? No.

So strict literal interpretation it should be fine.

However, the grey area is they *can* technically terminate new hires for "any reason or no reason". "No reason" probably won't hold up in civil court, but an actual reason, like a failed checkride that they didn't account for in their hiring analyses might actually hold up, or they might be willing to risk it.

So do you say nothing and risk it? Or come clean?

The risk of coming clean seems like the lesser evil, unless you already have a couple previous busts and this one might break the camel's back. But you have to assume they'll run PRIA after you start training. I guess my concerns would be do you have previous busts, and might they suspect that you blew off your preparation because you had one foot out the door? If you come clean you get to address that pro-actively, not on the defense. I know a guy who had to defend himself in a very similar position as a new-hire... he said it was even more nerve-wracking because the manager had his plane ticket home sitting in plain sight on the desk (he got to stay, and yes it was a long time ago).

The downside to not fessing up is getting fired, if you fess up worst case you still have your old job (or did you resign yet?).

It probably matters which airlne we're talking about too. Major? Regional? ACMI?

Again the details matter and you'd better talk to a pro interview prepper. Bottom line you're probably fine unless you have a pattern of busts, or recent 121 busts.