air101 is correct on UAL scope. In order to add more 76 seat RJs than are already on order UAL would have to place a small narrowbody aircraft (defined as E190 or CSeries) at mainline or get rid of some 70 seat RJs.

Those of you who think that 30 E175 options are "earmarked" for Mesa need to realize that these options could also be "earmarked" to be converted to E190 orders for united.