Conquest Owners.Org

441 Conquest II
Role	Utility monoplane
National origin	United States
Manufacturer	Cessna
First flight	1975
Number built	362

The Cessna 441 Conquest II was the first turboprop designed by Cessna and was meant to fill the gap between their jets and piston-engined aircraft. It was developed in November 1974, with the first aircraft delivered in September 1977. It is a pressurized, turbine development of the Cessna 404.

Design and development

The aircraft has retractable tricycle landing gear and on takeoff has a ground roll of 1,785 ft (544 m).

The Conquest is powered by two Garrett TPE331 turboprops powering two four-bladed McCauley propellers. A 441 with Pratt & Whitney Canada PT6A-112 turboprops was flown in 1986 but did not enter production.

Modifications

The majority of Cessna 441s have been modified by installing Garrett TPE331-10 engines in place of the earlier versions of this same engine that it was delivered with. This modification reduces maintenance costs while increasing horsepower, service ceiling, fuel efficiency and range. Cessna 441s with this conversion tend to have higher resale values than aircraft that have not been converted.^[1][2]

Converting from the standard three blade propellers to smaller diameter Hartzell four blade propellers results in a climb rate improved by 200 fpm (1.01 m/s) and a 5 kn (9 km/h) increase in cruise speed as well as reducing cabin noise and improving ground clearance.^[2]

Airframe Limitations

The Cessna 441 is limited to 22,500 hours of air time by a Cessna Supplementary Inspection Document (SID). This life-limit SID is mandatory in the USA for air carriers operating the aircraft but is advisory only for private operators.^[3]

Designation

The ICAO designator for the Cessna Conquest as used in flight plans is C441.

Further developments

A smaller aircraft was marketed as the Cessna 425 Conquest I, itself a turbine development of the Cessna 421.

Specifications (Conquest II)

Reference:Flight Research^[4]

General characteristics

• Crew: one or two pilots
• Capacity: 8-10 passengers
• Length: 39 ft 0 in (11.89 m)
• Wingspan: 49 ft 4 in (15.04 m)
• Height: 13 ft 2 in (4.01 m)
• Wing area: 253 ft² (23.5 m²)
• Empty: 5,488 lb (2,489 kg)
• Maximum takeoff: 10,165 lb (4,608 kg)
• Powerplant: 2× Garrett TPE331 turboprops, 636 shp (474 kW) each

Performance

• Maximum speed: 245 kn (454 km/h) IAS
• Range: 1,291 miles (2,077 km)
• Cruise: 260 kn (480 km/h) TAS
• Service ceiling: 35,000 ft (10,668 m)
• Rate of climb: 2,435 ft/min (742 m/min)
• Wing loading: 40.2 lb/ft² (196 kg/m²)
• Power/mass: 8.0 lb/hp (0.21 kW/kg)

References

1. ^ Honeywell International (2009). "TPE 331 Engine Conversions". http://www.honeywell.com/sites/portal?smap=aerospace&page=TPE331_Engine_Conversion_TPE&theme=T6. Retrieved on 2009-03-21. 
2. ^ ^{a b} Hubber, Mark (October 2008). "Used Jet Review - Cessna 441 Conquest II". http://www.bjtonline.com/flying/used-jet-review/s/npage/1/article/cessna-441-conquest-ii-735.html. Retrieved on 2009-03-21. 
3. ^ FAA Clarifies Cessna's Life Limit For The 441 Conquest II accessed 10 September 2007
4. ^ Flight Research (undated). "Cessna Conquest II 441". http://www.flightresearch.com/html/aircraft/cessna441.shtml. Retrieved on 2009-03-25.