Amadeus' full-content agreement with American Airlines on Aug. 31 expired without a successor or extension,

according to The Beat. The airline disclosed that "any Amadeus GDS product" now is subject to a $5.50 per-segment "Source Premium" surcharge. "We remain in discussions with Amadeus, so it is too early to tell whether or how the change in our policy will ultimately affect Amadeus subscribers in the United States," an AA spokesman noted.