In the last several years, it has been said that anyone who wanted to a pilot spot (USAFA)and qualifed, got it. Having said that it can change quickly. I hear this year the number of pilot spots dropped although I cant confirm if that is true or not. Traditionally, the acadmies get the most number of spots. Its something like 550 to to the academy, 400 to AFRotc and the rest go to OTS. When they start cutting the spots, the take it away from OTS first. The problem with the AF is that there are only 3.5 UPT schools and they can only squeeze so many students into the pipeline. The other issue is the limited number of trainers although can fixed if desire. As for passing UPT, it looks like very few people fail although it happens. They are trying to push more pilots through and they are now willing to work with the students to make sure that happens. You have to be a complete screw up excluding medical and other issues, in order not to pass. In my sons UPT class, a female pilot failed one time to many and was going to be kicked out. All of the men and women in the class wrote a letter explaing whey she shouldnt and she wasnt kicked out. What happens now is that you sort of work at your own pace and if you get too far behind, they will put you in newer class in order to go through the basics again.