American Airlines' parent company, AMR Corp., has asked the bankruptcy judge to give the carrier another 30 days to file its reorganization plan with the court.AMR currently has until Dec. 28 to file its plan but, in a motion filed on Tuesday, asked that the deadline be extended to Jan. 28. The unsecured creditors committee joined AMR in its motion, supporting the request to push back the deadline."The additional thirty days will be used to develop and build consensus for a feasible Chapter 11 plan," the filing said, adding that it will give American more time to negotiate with its pilots union, which is the only unionized work group at the carrier that does not have a new contract agreement in place.In an interview last week, AMR chief executive Tom Horton said he thought the carrier would be able to file its reorganization plan by the end of the year."I think we can do it," Horton said. "Now, we may, I wouldnt rule out the possibility that we seek an extension. But there is no reason why we cant have a plan filed by the end of the year."