The Cessna Model 425 was originally known as Corsair and later Conquest I. Regularly configured to seat six occupants but is certified to seat eight. Capable of reaching speeds of approximately 250 knots (460 km/h) and cruising at up to 30,000 ft (9,100 m), this aircraft is a pressurized, turboprop airplane. 425 boasts the Pratt & Whitney PT6A-112 engines manufactured by the Pratt & Whitney Canada. This particular aricraft is derived from the Cessna 421 twin-piston-engine airplane. Design work on the Corsair started in 1977 and its first flight was on September 12 1978. The 425’s first production deliveries took place in November of 1980, and like most category airplanes, the Cessna 425 is certified for single pilot operations. Cessna produced 236 425s from 1981-1986. The Conquest name originally belonged to its larger turboprop sibling, the Cessna 441, which was powered by the Garrett AiResearch TPE-331 engine. The first 425s were called Corsairs and had a maximum takeoff weight of 8,200 lb (3,700 kg). Cessna then decided to upgrade the 425 Corsair’s landing gear that increased the maximum takeoff weight to 8,600 lb (3,900 kg) and started naming them Conquest I. The original Model 441 Conquest was dubbed as Conquest II. It is believed all the Corsairs had their landing gear improved and so they all became Conquest Is, making the Corsairs in the US a thing of the past. Like the King Airs marketed by Cessna’s competitor Beechcraft, The two Conquest models were as far as Cessna ever got to creating a family of turbopropeller airplanes.

Even though there is a relatively small population, the market for used 425s is still quite active. Fortunately, the airplane is still favorably regarded. Relative economy and good performance are its key strengths, including first-rate handling characteristics, balanced-field numbers, well-designed cockpit for single-pilot operation, good loading options, good CG range and not to mention –a comfortable cabin. For a properly-maintained airplane, dispatch reliability is high, and operational simplicity makes it relatively undemanding to fly.

One of the strengths of the 425′s design is the virtually bulletproof Pratt & Whitney Canada PT6 free turbine engine. The A-112 version originally installed in the 425 is a flat rated at 450 SHE. It is a fairly simple one that is not highly stressed. It is for pilots transitioning to turbine power and for operators at smaller airports, PT6 power is the right choice and is easy to support. The in-flight shutdown rate is remarkably low, and it is for this reason that many pilots call it bulletproof.

Specifications and General Characteristics

Crew 1 / 2
Passengers 4-6
Propulsion 2 Turboprop Engines
Engine Model Pratt & Whitney Canada PT6A-112
Engine Power (each) 336 kW 450 shp
Speed 426 km/h 230 kts
  265 mph
Mmo (max. Mach) Mach 0.52
Service Ceiling 10.180 m 33.400 ft
Range 2.919 km 1.576 NM
1.814 mi.
Empty Weight 2.209 kg 4.870 lbs
max. Takeoff Weight 3.901 kg 8.600 lbs
Wing Span 13,45 m 44,1 ft
Wing Area 20,9 m² 225 ft²
Length 10,93 m 35,9 ft
Height 3,84 m 12,6 ft
First Flight 12. Sep. 1978
Production Status out of production
Total Production 236
Developed from Cessna 421 Golden Eagle
ICAO Code C425
Data for (Version) Cessna 425 Conquest