Checkboard, Certainly pod mounted engines help, but there are cases of chunks of engines punching holes in the wing tanks with very nasty results. The bottom line is there is no such thing as a " "Minor" fire when airbourne, get the sucker on the ground ASAP, most electrical and smoke of unknown source checklists are pretty long, { Swissair into Peggys Cove} trying it out in the sim is well worth it