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akiley wrote in
: On Jan 14, 11:07 pm, Bertie the Bunyip wrote: wrote innews:f4c009c3-4d05-46f4-9ceb-c54f686f33d7 @e25g2000prg.googlegroups.c om: I seem to recall some twins had problems with fuel lines chafing, which cased the fuel line to rupture draining the tank into the wing area behind the engine somewhere. Haven't heard of it but I'd be surprised if it hadn't happened somewhere, sometime. Maybe you wouldn't want to try to restart that failed engine using crossfeed! Also, can't a clogged fuel tank vent cause a vacuum, then fuel starvation? Yep! So maybe the aircraft manufacturer doesn't want to suggest the option of restarting a failed engine by crossfeeding from the opposite engine because: It might be dangerous in some cases like you mention. Fuel leaking internally. Maybe securing that failed engine, which turns off fuel and electricity on that side is a safer option. Well, they did provide you with a crossfeed! You do what you have to do, but you'd want to be sure of what it is you're doing. If you needed the engine to keep you from hitting somethng, the ground, for instance, then you don't have a lot of choice. So it all depends. You might know for sure why it shut down. Hard to say even when you;re sitting there next to the engine. In jets it's something we might consider a bit more seriously since they can flame out just from very heavy rain, for instance ( shouldn't, though) We're trained to attempt a restart if there's no apparent damage to the engine, but we're not trained to try and see if fuel from the opposite tank will fix it. If the tank on that side has run dry, I'd be just as wary of a restart never mind one from the other tank as I would in a light twin for the same reason you stated. But if I knew why the fuel was gone and it wasn't dangerous to restart and I was very sure of that, well then, sure, I'd attempt a restart and I would use the fuel from the opposite tank. Bertie Good points, I think I have a better understanding of the situation now. Kay! Probably more than you wanted to know, but it's hard to tell exactly what someone wants to know here! Bertie |
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