Scott.N

In 30+ years of working in an aircraft engine overhaul shop I've had access to Plane Power (previously Hartzell, Electrosystems, Ford, and Prestolite) alternator and starter manuals and they've mentioned 500 hour alternator inspection procedures for at least the last 20 years. This isn't just limited to gear drive Continental alternators. It also includes many of the belt drive alternators on Continentals and Lycomings as well. Usually the lightweight alternators aren't field serviceable, but that older stuff still is. Scott @ Pro Aero Aviation