Hello Anthropoid as far as No.11 goes I think it was simply AI getting confused and crashing -but it's better to think to oneself it was indded some bizarre circumstance of both planes suffering technical faults ohh no no, I don't think random system failures are modelled at all, though these might be hidden in the code somewhere and unused. Before you ask, damages from fire etc are progressive so once you're on fire, dive, cut off the engine and pray. Then down low you could try restrating ot to low amounts to try limping home -that on medium or better hard settings of course. hope that helps. As for ROF steam/non Steam can't say, have only the non Steam and stick to it, well used to i nthe past a bit
ohh, and welcome around