The Piper PA-34-200T “Seneca” is a twin piston engine aircraft operating under an Experimental Airworthiness Certificate. It is capable of carrying up to two passengers with a crew of two. Its two Continental TSIO-360-EB turbocharged reciprocating engines produce 200 HP at sea level. The maximum takeoff weight of the Seneca is 4,570 lbs. It is instrumented and serves as a flying laboratory with a flight test engineer console. NTPS uses the Seneca for Performance and Flying Qualities flight test instruction.