The previous UAX 70 seat max was raised to 76 seats. UAL had not added a 70 seater to the 153 UAX flew for years. The UPA then lifted the UAX seat limit to 76 and the number to 255 70/76 seaters. For flight hours the UPA uses a different metric, but it is essentially more liberal, but you contend those are the reasons for UAX parking 50 seaters? I've got news for you. The 50 seaters have been uneconomical long ago relative to 737s and A319s, but they served a larger labor relations purpose.

Again, the only reason the majors are accelerating the parking of the 50 seaters is that they cannot find the pilots who will fly them for minimum wage. The UPA 'limits' gave the company 102+ 76 seaters for nothing. DAL was already at that limit and their pilots got 88 mainline 717s and near tern Delta Express shrinkage to 450 aircraft. Our negotiators got theirs and our clocks cleaned for DAL - 1 year.