The Geneva-based trade body said Thursday that the EU plans request on Oct. 23 the right to impose the sanctions.
On Monday, the U.S. claimed it had complied with a March WTO ruling against illegal subsidies to Boeing by stopping some payouts to the company through NASA and the Pentagon and by removing some beneficial tax and funding policies.
The WTO panel has also ruled that European governments provided $18 billion in subsidies to Airbus - though not all were deemed illegal.
(Copyright 2012 by The Associated Press. All Rights Reserved.)