Originally Posted by JT8D

Nah you haven't ruined your career. So you made a mistake, who hasn't? Like you said before, disclose it when they ask, and during the interview when it comes up just give them a brief summary of what you said here.

Their main concern is that you are capable of making it through initial training. These days they may have more of an eye out for patterns of failed checkrides, especially since the Colgan crash, but one isolated event shouldn't be a deal breaker.