EASA AD US-2020-19-06
MCCAULEY PROPELLER SYSTEMS - Governor Idler Gear Bearings - Replacement
MCCAULEY PROPELLER SYSTEMS - Governor Idler Gear Bearings - Replacement is a Federal Aviation Administration (FAA) Airworthiness Directive addressing certain McCauley Propeller Systems governors installed on airplanes. It targets governors that may contain an unapproved variant of the idler gear bearing, part number A-20028, marked with "BA 59," which does not meet McCauley drawing requirements. This unsafe condition affects all models of McCauley governors produced or serviced between January 31, 2017, and September 27, 2018.