Cessna Conquest I Aircraft 1980s

1980s turboprop twins are dominantly Beechcraft King Air 200 (the volume King Air of the era), King Air 90 series (C90, E90), and Cessna 441 Conquest II. PT6A engines from this era remain reliable with proper hot-section maintenance; airframes are well-supported via Textron/Beechcraft. Avionics typically Honeywell Primus or Collins; ADS-B and FANS retrofits are essentially universal on active aircraft. Mid-life airframes with current engine programs.

The Cessna Conquest I (model 425) is the smaller of Cessna's two pressurised twin-turboprops — a cabin-class aircraft powered by two Pratt & Whitney Canada PT6A turbines, offering turbine reliability, a comfortable pressurised cabin and high-altitude capability. It bridges the gap between piston twins and larger business turboprops, cruising around 270 knots. See the live price range and median above for the Cessna Conquest I and 425 listings currently on the market.

Cessna Conquest I aircraft for sale

13 used Cessna Conquest I aircraft for sale 1980s · 8-seat · Used median asking $1,037,000 · updated 6 hours ago

Cessna Conquest I Specifications

Model spec

The Cessna Conquest I is a 8-seat multi engine turboprop with a cruise speed of 272–283 kt (504–524 km/h), a range of 1,500–1,650 nm (2,778–3,056 km), and a useful load of 3,000–3,100 lbs (1,361–1,406 kg).

Performance
Cruise272–283 kt (504–524 km/h)
Max Speed289–296 kt (535–548 km/h)
Range1,500–1,650 nm (2,778–3,056 km)
Service Ceiling30,000–35,000 ft (9,144–10,668 m)
Engine & Fuel
EnginePRATT & WHITNEY PT6A-112
Horsepower450–635 HP
Fuel Capacity182.0–475.0 gal (689–1,798 L)
Fuel Burn70.0 GPH (265 L/h)
TBO3,500 hrs
Weights & Seats
Seats8–11
Max Gross Weight8,600–9,850 lbs (3,901–4,468 kg)
Useful Load3,000–3,100 lbs (1,361–1,406 kg)
Production1980–1985

Cessna Conquest I for Sale

Browse all listings →

Cessna Conquest I asking prices range from $829,000 to $1,550,000, with a median of $1,037,000 (market reference $900,000).

1981 Cessna Conquest I

1981 Cessna Conquest I for sale below typical asking range
$829,000
For Sale
Total Time 5,960
Reg# N425AL US
Location Orlando
Via Robert Serge
Listed 2mo ago

1981 Cessna Conquest I

1981 Cessna Conquest I for sale below typical asking range
$850,000
For Sale
Total Time 7,355
Reg# N425TB US
Location Fort Worth, TX
Via Fort Worth Jet & Associates
Multiple sources

1981 Cessna Conquest I

1981 Cessna Conquest I for sale within typical asking range
$899,000
For Sale
Total Time 11,100
Reg# N316EJ US
Location Wray, CO
Via G2G Aviation
Multiple sources
Listed 3mo ago

1981 Cessna Conquest I

1981 Cessna Conquest I for sale within typical asking range
$999,900
For Sale
Total Time 7,860
Reg# N425JE US
Location Scottsdale, AZ
Via Fresh Aircraft Sales
Multiple sources

1981 Cessna Conquest I

1981 Cessna Conquest I for sale within typical asking range
$1,075,000
For Sale
Total Time 9,348
Reg# N425ML US
Location Goleta, CA
Via Rocket Air LLC
Multiple sources

1984 Cessna Conquest I

1984 Cessna Conquest I for sale above typical asking range
$1,250,000
For Sale
Total Time 6,606
Reg# N76SJ US
Location Goleta, CA
Via Rocket Air LLC
Multiple sources

1981 Cessna Conquest I

1981 Cessna Conquest I for sale above typical asking range
$1,385,000
For Sale
Total Time 5,910
Reg# N425DK US
Location Tulsa, OK
Via GRIFFITH AVIATION
Multiple sources

1981 Cessna Conquest I

1981 Cessna Conquest I for sale above typical asking range
$1,550,000
For Sale
Reg# N1222B US
Location Paso Robles, CA
Via Circle M Aviation
Multiple sources

1985 Cessna Conquest I

1985 Cessna Conquest I for sale
Contact for Price
On Request
Reg# N137CD US
Location Houston, TX
Via Doewe Pelleboer
Multiple sources

1981 Cessna Conquest I

1981 Cessna Conquest I for sale
Contact for Price
On Request
Total Time 2,314
Reg# N425WD US
Location WA
Via jetAVIVA

Cessna Conquest I Variants

Variant Years Seats Cruise Range Useful load Price range Best for Listings for sale
Conquest II 1977–1986 11 272 kts (504 km/h) 1,650 nm (3,056 km) 3,100 lbs (1,406 kg) $773K – $1.9M The larger, faster, TPE331-powered Conquest — for a buyer who wants the most capable cabin-class pressurised twin turboprop in Cessna's line. 6

Compare Cessna Conquest I

See how the Cessna Conquest I stacks up against similar aircraft in specs, price, and operating costs.

Cessna Conquest I vs Beechcraft King Air 200 Cessna Conquest I vs Cessna 421 Cessna Conquest I vs Commander 690

Cessna Conquest I Price & Cost

How much does a Cessna Conquest I cost? Used Conquest I prices: $829K – $1.6M, average $1M (median $1M); market reference $900K, across 8 priced of 13 active listings.

Cessna Conquest I Price Guide

Key price factors: engine time to overhaul, year and airframe hours, avionics, damage history and logbook completeness — see the buying guide below for the full pre-purchase checklist.

Cessna Conquest I Cost of Ownership estimate
Fuel (70.0 GPH × $6.20, 100 hrs)$43,400/yr
Annual Fixed (hangar, insurance, annual)$55,000/yr
Variable (per hour)$650/hr
Engine Overhaul (every 3,500 hrs)$200,000
Estimates at 100 flight hours/year. Actual costs vary by usage, location and insurance.

The Conquest I's dominant ownership cost driver is PT6A-112 hot-section and overhaul timing on both engines — the stagger between the two engines' time-since-overhaul significantly affects total cost. Confirm each engine's hours and hot-section status independently, and whether either engine is enrolled on a per-hour maintenance program.

Buying guides: Buyer's Guide | Financing Guide | Pre-Buy Inspection

Buying a Used Cessna Conquest I

Buying a Cessna Conquest I comes down to a focused pre-purchase checklist — here is what matters most on this model:

What to check before buying

The Cessna Conquest I (Model 425) was Cessna's entry-level pressurised turboprop twin — designed to bridge the gap between high-performance piston twins and the larger Conquest II. Built on the 421 Golden Eagle airframe and powered by two Pratt & Whitney Canada PT6A-112 engines (~450 shp each), it was produced in the first half of the 1980s.

What the PT6A-112 means for owners: The PT6A-112 is a derated, propjet-mounted member of the PT6A family — globally supported, with an enormous service network and readily available parts. The PT6A's flat-rated reliability is the Conquest I's primary ownership advantage over the piston-engined 421 it complements.

421 airframe heritage: The Conquest I shares its airframe with the Cessna 421 Golden Eagle piston twin. The pressurisation system, structure, and cabin layout are familiar to 421-experienced shops — a maintenance advantage compared to purpose-built turboprop airframes.

Versus the Conquest II: The Conquest II (Model 441) uses Garrett TPE331-8 engines and is significantly more powerful and faster, but the Garrett engine has a different support ecosystem than the PT6A. Buyers who value the PT6A's ubiquitous support — particularly for international operations — often prefer the Conquest I despite its lower power.

Buy it if: you want pressurised turboprop-twin capability with the PT6A support network that follows you worldwide. The Conquest II is faster and more capable; the Conquest I costs less and leverages PT6A support anywhere. For moderate missions its PT6A ecosystem gives it a long-term maintenance advantage over the Garrett-powered 441.

Frequently Asked Questions — Cessna Conquest I

What is the Cessna Conquest I?
The Conquest I (model 425) is the smaller of Cessna's two pressurised twin-turboprops — a cabin-class aircraft powered by two Pratt & Whitney Canada PT6A turbines, offering turbine reliability and a comfortable pressurised cabin.
What is the difference between the Conquest I and Conquest II?
The Conquest I (425) is the smaller, slower twin powered by PT6A turbines; the Conquest II (441) is the larger, faster aircraft powered by Garrett/Honeywell TPE331 turbines, with more range and cabin.
How much does a Cessna Conquest I cost?
Used Conquest I prices vary with engine status, avionics and condition. See the live price range and median above.
What are the Cessna Conquest I specifications?
The Conquest I cruises around 270 knots, a pressurised cabin-class twin turboprop with a typical range of roughly 1,500 to 1,800 nautical miles, depending on weight and reserves.
What engines does the Cessna Conquest I use?
Two Pratt & Whitney Canada PT6A turboprops, one of the most proven turbine engines in aviation.
How many seats does the Cessna Conquest I have?
Typically six to eight in a cabin-class layout, plus crew, depending on the interior configuration.
Is the Cessna Conquest I still in production?
No — Conquest production ended in 1986. Both Conquest models are well supported by parts and service networks for owner-flown and light-business use.

Cessna Conquest I Inventory by Country

United States12
Rome1
South Africa1

Cessna Conquest I Inventory by State

California3
Texas3
Colorado2
Florida2

Recently Sold Cessna Conquest I

1980 Conquest I$675,000

Cessna Conquest I Safety Record

No NTSB events on record for the Cessna Conquest I. Individual aircraft safety records may be available on detail pages.

Source: NTSB Aviation Accident Database

Disclaimer: All prices, cost estimates, and market values shown are based on asking prices from third-party sources and are provided for informational purposes only. AeroGurus is not an appraiser, broker, or financial advisor. Always obtain a professional appraisal and independent inspection before making a purchase decision.
Listings last refreshed 6 hours ago · Data: FAA Registry, NTSB · About our data