WASHINGTON – The International Brotherhood of Teamsters (IBT), the certified union representative of the pilots of Republic Airlines and Frontier Airlines, today filed a lawsuit in U.S. WASHINGTON – The International Brotherhood of Teamsters (IBT), the certified union representative of the pilots of Republic Airlines and Frontier Airlines, today filed a lawsuit in U.S. District Court in Denver against Frontier Airlines Inc., its parent company, Republic Airways Holdings Inc. and a shell company set up by the rejected former union of Frontier. The lawsuit alleges that Frontier, Republic Airways Holdings and the former union of Frontier pilots, the Frontier Airline Pilots Association, which recently lost a union representation election to the IBT, conspired to interfere in the representation election held in June by the National Mediation Board (NMB) among the pilots of the airlines controlled by Republic Airways. The IBT alleges that Frontier and Republic colluded with FAPA during the balloting period to interfere in the election in exchange for FAPA agreeing to concessions for Frontier pilots.