Woodja,
Similarly, and not that this implies a cause in this case- merely another Achilles heel to address, look at the U tube link below which highligts what I believe is a weak spot in a 777 ( in fact all Boeings greater than 767 in size as fitted) defences. I have been banging away trying to mandate a fix for several years but frankly am getting a sore head doing so. Although I honestly believe this will most likely turn out to not be relevant in the MH case, it provides information that might be in need of attention by authorities ( IMHO only)
Would someone accessing this area be able to shut down all coms/transponder/etc by pulling appropriate C/Bs?