The MBB BO-105 is a twin-engine light utility helicopter operating under an Experimental Airworthiness Certificate. It is capable of carrying two passengers with a flight crew of two. It is powered by two Rolls Royce Allison 250-C20B turboshaft engines that produce 350 HP. The BO-105 has a maximum weight of 5,510 lbs. It is instrumented and serves as a flying laboratory with a flight test engineer console in the rear. NTPS uses the BO-105 for Performance and Flying Qualities flight test instruction.