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Updated all my Dynon equipment to firmware 5.6.1 for an RV-6. After reconfiguring, I recalibrated the AP74 servos, roll and pitch. Then tried to perform servo test. The test failed becuz the airspeed is not at zero. Can't find how to zero calibrate the airspeed on the D180. Any ideas? Thanks, Tom
RV-12 ELSA builder/pilot. EAA member since 1965. EAA TC & FA. Com (SE & Sea) & CFII.