Mesa has written in their contact with America West, now US Airways, that all Phoenix express flying will solely be done by Mesa Airlines.
The following is from a Q & A session with Jeff McClelland:
"JM: The wholly owned vs. the affiliates is not well defined yet. However, we do know, simpler is better. Mesa is on its way out for US Airways flying and AWA is in. MESA has exclusive rights to operations in Phoenix. Trans States is out. Goal of the CO is to get feed from the most efficient and effective source. In the big picture, 6-7 express carriers sounds like a lot.
Q: Mesa has D-8 in Phoenix….
JM: There are 6 D-8 in Phoenix that feed. There is an agreement to option in 2007. There are not a lot of small low-density cities to feed PHX to there isn’t a lot of use for them. America West has an agreement with Mesa that if there is express feed into PHX, it will be done exclusively with Mesa."
Sucks.