Still Possible Fuel Starvation
In reference to the fuel system diagram in post #1026.......
If BOTH transfer pumps failed would that not leave about 95 liters of Unusable fuel in the lower Main fuel Cell??
Therfore... NO Fuel in the two aft SUPPLY fuel cells!
@earth2mars
Not possible! SUPPLY tanks are always full (44 kg and 40 kg) and do not need XFER pumps to supply the engines
("the engine driven fuel pumps alone provides enough suction capacity to draw fuel from supply tank via supply lines...")
Sometimes you land with 4kg in MAIN tank (or 0 kg ... and F.XFER pump CAD caution light ON) with 40 kg in one and 36 kg in another supply tank. If the average fuel flow is 3-3.5 kg/min, itīs enough fuel for 21-25 min...and FUEL LOW is still not ON.
When FUEL LOW warning light is ON, you have to land in 10 minutes.