Any training failures in the past 4 years will affect things. It’s not a disqualifier, but it will hold you back a bit. If it’s been more than 4 years, you should be fine. I can’t speak specifically for the fact that this happened in a helicopter, but I’d imagine they’d weigh it similar as to an airplane. I don’t think they’re necessarily concerned about what the failure was in, they’re just looking for failures in general as our training program is on the intense side and some folks struggle.

Not saying this is fair, but it’s how I understand the process works.