CHICAGO (AP) - Pilots at United Airlines say they could go on strike, after two years of failed negotiations on a new contract.
The Air Line Pilots Association said Tuesday that of the pilots who voted, 99 percent authorized a strike.
Federal law includes many obstacles to strikes among airline workers, and the vote doesn't mean pilots will be walking off the job anytime soon. The National Mediation Board has not declared an impasse in negotiations, a necessary precursor to a legal strike.
The pilots are unhappy over failure to win a single contract covering United and the former Continental airlines. The airlines combined in 2010 under parent United Continental Holdings Inc.
United is the world's biggest airline by passenger miles.
(Copyright 2012 The Associated Press. All rights reserved. This material may not be published, broadcast, rewritten or redistributed.)