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replacement red cube
My 2013 Glasair (Two Weeks to Taxi) Sportsman has a red cube fuel flow transducer connected from the Lycoming IO-390 to an AFS 5600. The fuel flow worked perfectly for >750 hours, but is now acting erratically: sometimes it reads 0 gph, sometimes 20 gph, and sometimes it's accurate. I am sure it's not the actual fuel flow because when it reads zero, the engine is still generating power! I tried removing the red cube and soaking it overnight in gun cleaner (my A&P's suggestion), to no avail.
Do I need to buy a replacement red cube from AFS? Or is the standard part from Aircraft Spruce just fine?
Thanks,
Bob
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