Doesn't account for the feathered props, though. That is something the pilot has to command. And it was both engines. They had to have been feathered before the stall.
See the post above yours... ATRs have “Auto Feather” ... If the engine dies it automatically feathers.
Based solely on them both being Feathered... Dual engine failure. (out of fuel, bad fuel) Or like someone else said.... 1 engine failure and pilot shut off the other engine...
pretty sad.