Middlefield, Ohio-based Airwolf Aerospace has begun developing supplemental type certificates (STCs) for the installation of True Blue Power lithium-ion batteries in several business jet and turboprop models. These include applications for certain Cessna Citations, Embraer Phenoms, Cessna Caravans, and Pilatus PC-12s.

Airwolf is also working on STCs for True Blue li-ion battery installations in the Airbus Helicopters AS350/AS355/H125, EC120, EC130/H130; Bell 206/L/L1/L4/L4; MD Helicopters MD369/500; and Enstrom 480. It expects those to be completed by the end of this month. Meanwhile, the company plans to add more helicopter models to the STC list after these initial approvals for rotorcraft.

Airwolf STC installation kits include the lithium-ion battery, mounting hardware, simple wiring harness, and Airwolf’s Intelligent annunciator/controller. The company said it has more than 30 years of experience designing, certifying, and manufacturing parts manufacturer approval and STC’d components.