Cessna 441 Conquest II

Overview

The Cessna 441 Conquest II is a high-performance pressurised turboprop that punches well above its weight class. Powered by Garrett TPE331-8 engines (often upgraded to -10), it delivers jet-like cruise speeds of 300+ knots and transcontinental range of 2,000+ nautical miles on a fraction of the fuel a comparable jet would burn. Production ran from 1977 to 1986, with roughly 360 aircraft built.

The 441 was Cessna’s first turboprop and remains one of the most efficient cabin-class turboprops ever certified. Its specific range, measured as knots per gallon at altitude, comfortably beats the King Air 200 and most of its contemporaries. For owner-operators flying coast-to-coast missions, the 441 routinely completes the trip with a single fuel stop while a King Air needs two and a comparable jet burns through twice the fuel.

The aircraft was the subject of an early Airworthiness Directive on the horizontal stabiliser structure, which has since been resolved across the fleet. The remaining concern for buyers is the recurring cost of Cessna’s Supplemental Inspection Documents (SID) program, which compounds significantly on high-time airframes and should be a central focus of any pre-buy.

Key Features for GA Buyers

• Efficiency. The 441 is legendary for its specific range. It can fly from Los Angeles to Washington D.C. nonstop with favourable winds while burning less fuel per hour than many King Airs use on much shorter trips. At 31,000 ft it cruises at approximately 300 KTAS on roughly 60 GPH total.
• Garrett engines. The direct-drive TPE331-8 engines (often upgraded to -10) provide instant throttle response and outstanding high-altitude efficiency. They are louder on the ground than the PT6 family that powers most of its competitors, but smoother and faster-spooling in flight.
• RVSM capable. With a service ceiling of 35,000 ft, most 441s are RVSM equipped to take advantage of favourable winds in the high 20s and 30s, where the type’s mission profile lives.
• Cabin and useful load. The 441 seats up to 10 in a pressurised cabin nearly identical in dimensions to the King Air 200, with useful load of 3,900 lbs. The 6.3 psi pressurisation differential maintains a sea-level cabin to roughly 18,000 ft and a 10,000 ft cabin all the way up to FL350.

Trade-offs

• SIDs. Like the 425 Conquest I, the 441 fleet is subject to rigorous Supplemental Inspection Documents. Due to high airframe times across the production run, these inspections can be costly, particularly the wing-related items. Pre-buy verification of SID compliance is essential.
• Complex systems. The 441 is a sophisticated aircraft. The pressurisation differential, hot-section limits on the Garrett engines, and electrical complexity all reward operators with strong systems discipline and punish those without it.
• Niche support network. Cessna’s turboprop service network is thinner than Beechcraft’s King Air network. Specialist Garrett-engine shops are concentrated in a handful of regions; routing to one for a hot section can add ferry time to scheduled work.
• Name recognition. The 441 is a quiet success in the market. Buyers love it, but it lacks the mainstream-corporate name recognition of the King Air or Citation. Expect to explain the aeroplane to passengers more often than you would in a more familiar type.

See Also

• Cessna 425 Conquest I – the smaller, slower PT6-powered sibling in the Conquest family; meaningfully cheaper and easier to insure for an owner-operator. Compare
• Beechcraft King Air 100 – the closest direct competitor in cabin size and mission profile; PT6-powered, slower than the 441, with a much larger service network. Compare
• Beechcraft King Air 350 – the step-up cabin-class King Air; significantly more useful load and longer legs at much higher acquisition and operating cost. Compare
• Mitsubishi Marquise / Solitaire – the speed-focused MU-2 alternative; faster than the 441 but with a steeper handling reputation and a smaller buyer pool. Compare
• Piper Cheyenne III – the comparable Piper turboprop; PT6-powered with a similar cabin, and the Cheyenne fleet’s well-known maintenance discipline reputation. Compare