NEW YORK - A group of pilots for US Airways Group Inc. on March 6 filed an adversary complaint in the Chapter 11 bankruptcy proceeding of AMR Corp., contending that another group of pilots should not be permitted to file a lawsuit in bankruptcy court pertaining to claims that were part of a lawsuit filed prior to the bankruptcy petition because any such lawsuit would interfere with the bankruptcy and the planned merger of American Airlines Inc. and US Airways (US Airline Pilots Association v. Leonidas LLC $(In Re: AMR Corporation$), No. 11-15463, Chapter 11, S.D. N.Y. Bkcy.).