Assuming you are army. Airlines don't control r-atp requirements...the FAA does. 750 hours is 750 hours. 250pic in airplanes is 250 pic in airplanes...have those and the other specific r-atp times and you are eligible. All regionals accept r-atps to my knowledge. And most accept anyone with any sort of atp as far as I know, but fw mins are obviously at the discretion of the airline, which I think is your question. Is your written done? That's key, bc most regionals don't have a CTP set up. If you are interested in an airline, check their website, and if it doesn't say, call a recruiter and ask.