NEW YORK - A representative of Los Angeles World Airports (LAWA), the management company for Los Angeles International Airport (LAX), on Jan. 2 filed a brief in the Chapter 11 proceeding of AMR Corp., the parent company of American Airlines Inc., arguing that LAWA should be given leave to file a lawsuit in California federal court to recover $21,556,915.70 in charges American Airlines owes LAX (In Re: AMR Corporation, No. 11-15463, Chapter 11, S.D. N.Y. Bkcy.).