Airwolf Aerospace has received FAA STC approval (SR04637CH) for the installation of True Blue Power TB17 lithium-ion batteries for five makes and 10 models of helicopters.

The lithium-ion STC kits are now in stock and ready for installation in Airbus H125/AS350, AS355, EC120 and H130/EC130, Bell 206A/B, 206L/L1/L3/L4, Enstrom 480B, Hiller UH-12E and MD 369/500 types.

Airwolf would like as many operators as possible to benefit from the lithium-ion technology, so the STC allows installation of the battery in AS350 helicopters in the baggage compartment, the large door tail cone and the small door aft tail cone positions. The Airwolf kits come complete with battery, mounting hardware and annunciator, and are easy to install with no major modifications to the aircraft.

The field proven TSO-certified True Blue Power TB17 lithium-ion battery provides a decrease in weight of up to 63 per cent, increasing useful load; higher voltage for powerful starts; eight year average life; a two year maintenance cycle; and an automatic built in heater.