From what I read here about airline HR practices, you had better find a way to start seeing these two failures as your own doing. End of story. You really need to sing the "I admit the error in my ways" song for an application to be be seriously considered. That's just the way the system works. Even if the alleged transgression was not fully your own doing and many of us have glitches in our past we have to deal with, you need to be firmly certain the system does work and somehow you just didn't get it right on that occasion. I know that's asking a lot, and don't lie to yourself either, but think about it from the interviewer's side. If you are an interviewer and an applicant says an issue was not their fault, are you likely to A) believe them despite not having been there, take a risk on their being a compulsive rationalizer, or B) prefer someone who says they admit they were wrong and takes responsibility for a mistake and is eager to avoid it in the future at all costs and still wants to play the game? The interviewer knows there are shades of gray to almost every issue and you may have come up short on one of them. They are willing to forgive a few transgressions if good faith seems to be present, especially if when the problems do not form a pattern or they are far enough in the past.