United Airlines is only U.S. airline that operates the 787 ; currently in service worldwide . Only 50 Dreamliners were flying worldwide at the time of its grounding , but the world 's largest aircraft manufacturer has orders for several hundred in the pipeline . The 787 was grounded in January after major battery fires in Boston and Japan . The Federal Aviation Administration will still sign off on Boeing 's battery issues .
United Airlines is only U.S. airline that operates the 787 ; currently in service worldwide . The 787 was grounded in January after major battery fires in Boston and Japan . The Federal Aviation Administration will still sign off on Boeing 's battery issues .