Systematic fuel warning after 10mn flight
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in what position does it stop pressurising the tanks but still allow FCR operation?
None.
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Out of interest, in BMS how did you get internal fuel less than full with tanks that still have fuel in them?
Air Source out of position
yup
trapped fuel in wing tanksin what position does it stop pressurising the tanks but still allow FCR operation?
None.
So, to clarify - in BMS, there should never be a way to have less than full internal fuel AND still have fuel remaining in external tanks, while not being aware of some fault somewhere (as the FCR will be inop)?
Surely this is more of a problem IRL, then?
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Or the AAR door open. In BMS given condition X I wasn’t getting behavior Y. I make no judgement about how common or likely condition X is, only that it is possible.
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So, to clarify - in BMS, there should never be a way to have less than full internal fuel AND still have fuel remaining in external tanks, while not being aware of some fault somewhere (as the FCR will be inop)?
Surely this is more of a problem IRL, then?
As Frederf stated the AAR door open will not allow the externals to feed as they depressurize those tanks in preparation for the AAR. If you forget to close the door the system will feed from internals until empty with a full set of tanks still. Have seen a guy do this where he forgot the switch and once past 7200 pounds he dropped the tanks thinking they were empty and he just got rid of over half of the gas he had left.
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Left console > fuel panel > ENG FEED knob, do you have this on the NORMal position? Error is a imbalanced / trapped fuel state, surly happening after AB takeoff, that explains your distance covered before the error appears. Are the rest fuel-related switchology positioned correctly?
Although it was on Normal position, I moved the knob left and right and that seems to have solved the issue, as I’ve been able to fly two missions without reappearance of the fuel warning 6 to 10 mn after takeoff. Thanks a lot for your help.
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As Frederf stated the AAR door open will not allow the externals to feed as they depressurize those tanks in preparation for the AAR. If you forget to close the door the system will feed from internals until empty with a full set of tanks still. Have seen a guy do this where he forgot the switch and once past 7200 pounds he dropped the tanks thinking they were empty and he just got rid of over half of the gas he had left.
And that’s why they invented an ops check where you actually move the fuel qty sel knob out of norm to the other positions to systematically check if the tanks are still feeding.
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or by habits you don’t move the switch and just declare them feeding or dry depending on your totalizer
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…after 6 to 10 mn of flight, I heard a warning signal sound, then “Fuel” is displayed on the HUD and will stay blinking, then after a while, … I will run out of fuel …
How can I fix this problem … ? Any idea?
Thanks in advance.
Shut down afterburner after takeoff?
Couldnt resist on that one
Greets!