NEW YORK (Standard&Poor's) March 7, 2011--Standard&Poor's Ratings Services said today that it assigned its 'B+' rating and '1' recovery rating to American Airlines Inc.'s proposed $1 billion senior secured notes, a 144A offering without registration rights. The '1' recovery rating indicates our expectation of very high (90% to 100%) recovery in a payment default scenario. "We base the 'B+' issue rating and '1' recovery rating on the 'B-' corporate credit rating on the company, as well as our expectation of very high (90% to 100%) recovery in a payment default scenario," said Standard&Poor's credit analyst Betsy Snyder. International route rights of American and related slots and gates will collateralize the notes. AMR Corp., American's