The Firefly was created by replacing the engine of the S-300C light helicopter, which has been in use for nearly half a century, during which time more than 3,000 have been built.
Firefly je stvoren zamjenom motora na S-300C lakom helikopteru, koji je bio u upotrebi skoro pola stoljeća (u tom razdoblju izrađeno je više od 3 000 S-300C helikoptera).