As US Airways continues to rapidly expand MidAtlantic Airways’ operations, Philadelphia has been selected as the company’s second crew domicile, effective as of September. MidAtlantic also is considering the possibility of soon establishing a third crew base at Ronald Reagan Washington National Airport. With the pilot and flight attendant base openings being announced today, MidAtlantic crewmembers will be able to bid either for Pittsburgh or Philadelphia as their crew base. Permanent bid notice for pilots will be sent today via email, and also will be available via theHub, in the Pittsburgh crew room and at MidAtlantic’s base administration office at Pittsburgh International Airport. A flight attendant transfer notice will also be posted today. Both notices will contain available positions for bid in Pittsburgh and Philadelphia as well as bid closing dates. MidAtlantic currently has 379 employees, and operates 56 flights at 18 airports with 10 Embraer 170 aircraft. MidAtlantic plans to operate 21 Embraer 170 aircraft in conjunction with the September bid and schedule.