The European Union Aviation Safety Agency (EASA) has granted Hartzell Engine Tech STC approval for its Plane-Power ALT-FLX alternator upgrades in a wide range of twin and single piston-powered aeroplanes and helicopters. The upgrades were previously approved in the US by the FAA.

“The Plane-Power ALT-FLX alternators are now STC-approved by EASA for a variety of aircraft and provide up to 100 amps in a 12-volt electrical system and up to 150 amps in a 24-volt system,” says Hartzell Engine Tech president Keith Bagley. “Weights are comparable to replaced alternators, and kits provided contain all the brackets and hardware needed to complete the upgrade,” he adds.

Aircraft covered by EASA's STC include a number of Aviat, Beechcraft, Cessna, Cirrus, Diamond, Extra, Mooney, Piper and Socata aeroplanes as well as Robinson helicopters, among others.