i dont think the airlines look at failed checkrides as a factor to hire you or not unless there is a pattern of failed checkrides every other year or two over a 5 or 10 year period.. i have failed checkrides before getting my 1st airline job. just keep working hard.. i have heard that if you have more than 1 speeding ticket in 5 yrs that can do you more harm then any failed checkrides. i would try and contact some pilot recruiters from different airlines and ask them what they think?? ..