Alenia Aermacchi has completed flight testing of the C-27J with winglets and results show that it had improved the lift-drag ratio of the medium turboprop airlifter.
![original_C_27J_with_winglets_g[1]](http://alert5.com/wp-content/uploads/2015/07/original_C_27J_with_winglets_g1-500x333.jpg)
Photo: Alenia Aermacchi
In-service benefits include improved hot and high runway performance, increased payload, range, endurance and the overall deriving reduction in operating costs, the company wrote.