The 900's out of CLT being operated on ground by EN are operated by Air Wisconsin.
Uh. No. The CRJ-900's that fly under the US Airways Express banner are owned and operated by Mesa Airlines (YV). The breakdown for all US Express operators is as follows:
CRJ-900 - Mesa Airlines
EMB170/175 - Republic Airlines
CRJ-200 - Air Wisconsin and PSA Airlines EAST/Mesa Airlines WEST
CRJ-700 - PSA Airlines
DH8100/300 - Piedmont Airlines EAST/Mesa Airlines WEST
EMB145 - Chautaqua Airlines and Trans States Airlines
SAAB 340B - Colgan Airways
All but the EMB170/175 are ground handled by either Piedmont or Mesa in the hubs. There are many ex-US mainline stations that have been outsourced to Piedmont or another ground services company that handle Airbus A320 series aircraft and some Boeing 737 equipment because their operations have fallen below the minimum number of mainline flights that are required to keep the CWA and IAM employed.
Believe me when I tell you this,,,, no station is safe from the bean counters in Tempe. They know the contracts and will outsource as much as they can to save a buck, and AVP is only one domino to come in the next 6 months. Most would be surprised to know that PIT has been reduced to 12 mainline flights per day, and if they want to outsource the entire operation to Piedmont, they would only need to drop 6 mainline flights and replace them with Republic 170/175 flights and POOF..... no more mainline ground handling or customer service operations. It's coming, and sooner than most would like to believe.