NEW YORK (Standard&Poor's CreditWire) Jan. 8, 2001—-Standard&Poor's ratings on AMR Corp. (BBB-/Negative/--) and unit American Airlines Inc. (BBB-/Negative/A-3) will likely be placed on CreditWatch with negative implications if press reports of a proposed acquisition of Trans World Airlines Inc. ("TWA"; CCC/Watch Neg/--; see related release regarding TWA) and certain assets of US Airways Inc. (B/Watch Pos/--) are confirmed. AMR and American's long-term rating outlook is currently negative, due to the potential competitive impact on American of the proposed UAL Corp. acquisition of US Airways Inc. parent US Airways Group Inc. and to potential credit-harming responses by AMR. The reported transactions, unconfirmed by AMR and TWA, would require TWA to file for bankruptcy reorganization, with American or