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AUXFUEL
Hi,
The aux tanks on my 337B- N5476S - have gone to near empty on long flights, and can see the fuel flow start to flux at empty. also as others have said the overflow from the engnie driven fuel pump vents to the respective main tank. Your can see the main tank fuel qty increase as you burn the aux fuel - if the gauge is working. The POH says use fuel from the main for 60 minutes before using the aux fuel - if you started with full mains.
The 128 gals useable gives longer flight legs than my bladder can
handle! :-))
I've had our friendly Skymaster since 1985, and plan to keep it as long as I can fly! :-))))
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