The AgustaWestland AW109 is a lightweight, twin-engine multi-purpose helicopter operating under a Standard Airworthiness Certificate. It can carry up to three passengers with a flight crew of two. It is powered by two Rolls Royce Allison 250-C20 turboshaft engines that produce 317 SHP at sea level. The maximum takeoff weight is 5,733 lbs. NTPS uses the AW109 for Performance and Flying Qualities flight test instruction.