Boeing 787 in major trouble - How far will stock drop?
Especially now that a flawed battery has been taken out of the picture.
Zafar Khan, aviation analyst at Societe Generale, said: "The obvious implication is that it may prolong the grounding. "If it's not the battery then we are back to the drawing board. We know it's an electrical - and not a structural - issue and that will be the focus for the inspectors. But there's a lot of cabling on these aircraft." It could takes months to find and correct an electrical problem.