Originally Posted by
airfoilmod
With respect, it's in here. Happy reading.
Further:
Be careful of "Fuel Heating". It is warmer temps that created the hazard, not "very cold" Fuel. (Though it was a precursor).
Location of FOHE? perhaps away from the Fan Shroud a bit.
Bypass, a no brainer. Though GE uses the concept to further cool the oil, in this case, a "recirculation" not strictly a "bypass".
The Bottom Line? The Fuel system as a whole on this combination wants to be a bit more complex, to include additional mitigating procedures and mechanicals. It always looked a little simplistic, turns out it is.
vapilot -It is always hazardous to rely on the unknown, or statistics. If what you mean is "one in one hundred thousand" of an additional occurence, think about how many months it takes the Fleet to hit 50,000 trips. At that point the chance? ONE in TWO. Let's see, 228 a/c, one trip a day, 1,000 every 4 days, twenty thousand every 80 days (Five to One), etc. See?
You are correct of course AFM.
Then there are the people in a quiet room somewhere at Mega-Corp Airlines' home office that crunch such numbers regularly. Our regulators also play this game, something I find the NTSB and the FAA at 'odds' on constantly.