It happened before that. Your scope clause was sealed tight and the company couldn't have UAX's with jets. The company said that if the pilots played ball, they would get more 747-400' and "after all, which would you rather fly, that or an RJ? Just let us buy them some RJ's but we can't afford both". Turns out it was a lie, go figure. The pilots voted yes and how many -400's have you gotten since then? None, and they went ahead and financed RJ's for ACA anyhow. Check your early '90's union history.