Frans, and all,
Airplanes are full of compromises. However you put it, there will always a risk
factor. It may sound funny, but the best way to stay out of fires is not to
crash.
That is priority number one. And a a result people start adding return valves.
Generally, adding components, especially components that you can not possibly
check on every pre-flight is adding risk. And the reason is wrong, fuel
came out because the pumps were still running. The flow stopped when i switched
the power off. Now please do not even think of a when-shocked-power-off thing,
because it might trigger in some turbulence :-) Anyhow, it is all so dependent
on how the planes comes to rest. Upside down? Nose down? It would be more
interesting to mediate about the risks a variable speed prop without mechanical
locks introduces and how to arm against those risks. That is for me the best
fire protection :-)
Regards,
Jos Okhuijsen
Recovering well, right eye written off. about 2 weeks to go before ready to
ship.
Visit - www.EuropaOwners.org
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