The general public thinks airline pilots are overpaid as it is. What, do you think the guy with the $60-80k, decent paying, well above median income, job is going to look at your billboard every day on his way to busting his ass at work and say: "You know, those guys deserve to top out at 5 times what I make instead of 4 times what I make, I'm not flying this airline again until those pilots make even more money!"

You have to consider the audience; major airline pilots are neither going to get the sympathy of the people that are going to see a billboard, nor will they deserve it. I personally think, like the rest of us in the industry, that we should be paid fairly and in line with our peers. Good luck selling that to Joe Sixpack though