The Piper PA-44 'Seminole' is a twin engine, low wing monoplane with a high T tail, in the general aviation aircraft category. It is powered by a pair of Lycoming O-360-E1A6D, air cooled, four cylinder, horizontally opposed, 180 hp engines and has seating for up to three passengers. Of particular note is the engine type fitment, as the right hand engine is a Lycoming LO-360-E1A6D variant (note the L prefix). This engine's rotation is opposite to the left hand engine in order to eliminate 'critical engine', thus making the aircraft more controllable in the event of an engine failure.

Later production Seminoles were built with Lycoming O-360-A1H6 engines.

The PA-44-180T Turbo Seminole version was certified on November 29, 1979. It features two turbocharged 180 hp (135 kW) Lycoming TO-360-E1A6D engines, which offer a significant improvement in performance at high density altitude. The Turbo Seminole had its takeoff gross weight raised to 3925 lb (1780 kg), while the landing weight remained at 3800 lbs (1723 kg).

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Performance

• Maximum speed: 193 mph (311 km/h, 168 kn)
• Cruise speed: 187 mph (301 km/h, 162 kn) (75% power)
• Stall speed: 68 mph (109 km/h, 59 kn) (flaps down) CAS
• Range: 1,053 mi (1,695 km, 915 nmi) (55% power)
• Service ceiling: 17,100 ft (5,200 m)
• Rate of climb: 1,340 ft/min (6.8 m/s)
• Single Engine Service Ceiling: 4,100 ft (1,200 m)
• Take-off to 50 ft (15 m): 1,400 ft (430 m)
• Landing from 50 ft (15 m): 1,190 ft (360 m)