By Alwyn Scott SEATTLE Thu Sep 25, 2014 10:32pm EDT (Reuters) – The U.S. aviation safety regulator has proposed requiring operators of some Boeing Co 787 Dreamliners to replace parts near the plane’s lithium battery in an effort to improve the plane’s ability to fight an on-board fire. In a directive issued on Tuesday, the Federal Aviation Administration said it had received reports that some 787-8 planes did not have foam-like plugs properly installed as […]