SENECA

Since its introduction in 1971 as the PA-34-200 Seneca I, the aircraft has undergone many changes. In 1975, responding to complaints about the aircraft's handling qualities, Piper introduced the PA-34-200T Seneca II. The new model incorporated changes to the aircraft's control surfaces, including enlarged and balanced ailerons, the addition of a rudder anti-servo tab, and a stabilator bobweight. The "T" in the new model designation reflects an upgrade to turbocharged, six cylinder TSIO-360 Continental engines for improved performance.
the PA-34-220T Seneca III was introduced. The change in model designation reflects an engine upgrade. This time, a different variant of the Continental engines were used with 220 horsepower (165 kW), although only rated as such for five minutes and then dropping to 200 hp (150 kW). The horsepower increase, combined with the new engines' rev limit of 2800rpm (up from 2575rpm), combined for much improved climb and cruise performance. The new aircraft also incorporated a one piece windshield, larger, electrically actuated flaps and a less flimsy instrument panel made of thicker plastic.
Specifications (PA-34-200 Seneca)
General characteristics
Crew: One, pilot

Capacity: Five passengers

Length: 28 ft 6 in (8.69 m)

Wingspan: 38 ft 11 in (11.85 m)

Height: 9 ft 11 in (3.02 m)

Wing area: 207 ft² (19.4 m²)

Empty weight: 2,625 lb (1,190 kg)

Useful load: 1,575 lb (715 kg)

Max takeoff weight: 4,200 lb (1,905 kg)

Powerplant: 2× Lycoming IO-360-C1E6 4-cylinder, air-cooled, horizontally-opposed piston engine, 200 hp (150 kW) each
Performance
Maximum speed: 170 knots (196 mph, 314 km/h)

Range: 982 nm (1,136 miles, 1,818 km)

Service ceiling 19,400 ft (5,914 m)

Rate of climb: 1,360 ft/min (415 m/min)

Specifications (PA-34-200T Seneca II)
General characteristics
Crew: One, pilot

Capacity: Five passengers

Length: 28 ft 5 in

Wingspan: 38 ft 9 in

Height: 9 ft 9 in

Airfoil: 208.7 ft²

Empty weight: 2,788 lb

Useful load: 1,782 lb

Max takeoff weight: 4,570 lb

Powerplant: 2× Continental L/TSIO-360-E 6-cylinder, air-cooled, horizontally-opposed piston engine, Rated Horsepower - 200 hp (sea level) / 215 hp (12,000 ft)

Engine: 1400 TBO

Overhaul cost: approx. $30,000 per engine each
Operating cost: approx. $250 per hour (At 100LL fuel - 5$ gallon)
Performance
Never exceed speed: 224 mph

Calibrated Airspeed Maximum speed: 225 mph 12,000 ft

Cruise speed: 208 mph

Stall speed: Vso 69 mph

Range: 900 nm

Service ceiling 25,000 ft,

single engine - 13,400 ft

Rate of climb: Sea Level 1,340 ft/min & single engine 225 ft/min