It's operating 4291 DCA
; it must have come in as 4294 from MDW
. I'm guessing they had a full flight and subbed it for the -800. I've noticed that they've done it a few times before.
I did notice that they ferried an airplane (-8) HOU-SAT a week or two ago, presumably for MX work. They could just be short an 8 somewhere..
[Edited 2006-05-08 02:07:20]
Maintain 2300 until Boiler, cleared for the VOR-A approach, report BATLE inbound..