Quick fix for Dreamliner looks less likely, experts say

(CNN) -- As the mystery deepened surrounding the new 787 Dreamliner battery system, U.S. federal investigators were set to conduct more tests aimed at eventually returning Boeing's grounded aircraft to the sky. Tuesday's NTSB tests will be conducted at a special facility Arizona. Tests conducted in Washington show that a lithium-ion battery that caught fire aboard an empty JAL Boeing 787 Dreamliner in Boston this month was not overcharged, the National Transportation Safety Board… (edition.cnn.com) Plus d'info...