MH 370

[Anomalocaris]

I believe that plane was carrying lithium-ion batteries as cargo - something it would be illegal to do in the US on a passenger flight. A fire makes the most sense to me. Some investigator put together a fire scenario that explained all the observed happenings. I read it over two years ago but I don't remember the source.

What kind of fire will leave the plane physically airworthy but disable the crew and communication system so suddenly, cause the fly by wire plane to take drastic course and altitude changes and then return to straight and level flight?