The improvements to the batteries and containment box seem to be addressing the safety requirements stipuated by the FAA
Lets be clear here. the FAA said the improvements to the battery were a step towards solving the safety issues with the 787.
The battery box is not a fix or solution to the problem according to the FAA.
No matter what Boeings
PR depart claim, until the problem is identified and a solution provided, the 787 is not going to be flying commercially.
Boeing just might be able to lobby the FAA but I doubt the Japanese, Europeans or the NTSC will be so easily to push around.
In my case it was safe for humans to be exposed to the halon atmosphere for in the order of hours.
Halon damages the liver and its unpleasant to breathe, the first time its used in a commercial aircraft would probably be the last, after the lawsuits.