AMR Corp, parent of American Airlines, said it may sell as much as US$300 million worth of newly issued shares for uses including debt repayment and aircraft purchases.

The timing of the possible sale wasn't specified in a United States Securities and Exchange Commission filing last Friday.

At Friday's closing price of US$10.52 a share, the move may involve more than 28.5 million AMR shares, Bloomberg News reported.

A sale would allow AMR to take advantage of shares that have more than doubled in price since early July, when jet-fuel costs peaked.

The company's debt and capital lease principal payments due this year total about US$1 billion, and AMR had paid about US$380 million as of the end of June, Chief Financial Officer Thomas Horton said.

In a separate regulatory filing, AMR said it may have to purchase as much as US$225.5 million in convertible notes on September 23.