My D180 equipped RV-12 has been displaying inaccurate fuel level for the past several weeks. The Dynon D180 Installation Manual mentions backing up data in case the settings take a vacation. So I decided to do the Fuel Level Calibration again necessitating draining the fuel tank.
I planned a one-hour flight with the 6 gallons visible through sight gage on the side of the tank. I also measured reaming fuel with a calibrated dipstick and confirmed 6 gallons remaining. The flight was timed with the GTX 327 Transponder up-timer and I frequently viewed over my shoulder at the Moeller gage on the top of tank. Upon landing, I drained the remaining fuel (1-3/4 gallon) by powering the Facet electric fuel pump and holding the gascolator drain open. Pouring 2-gallon increments of fuel into the tank and following the Fuel Level Calibration procedure did the trick. Fuel gage once again is extremely accurate.
PPL/ASEL 1970 - Sport Pilot since 2004
80 hrs Flying Aeronca Chief 11AC
1130 hrs Flying 46 Piper J-3 Cub
RV-12 E-LSA #120058 AWC Jul 2012 - Bought Flying Oct 2015 with 48TT - Hobbs now 397
LSRM-A Certificate 2016
Special Thanks to EJ Trucks