Twin Engine • Cessna • Conquest I Standard, Conquest I Executive, Conquest I Turbocharged, T303 (predecessor designation)
| Manufacturer | Cessna |
| Model | 425 Conquest I |
| Category | Twin Engine |
| Variants | Conquest I Standard, Conquest I Executive, Conquest I Turbocharged, T303 (predecessor designation) |
| Production Years | 1981 – 1990 |
| Seating | 6, 8 seats |
| Typical TTAF | 4,200 hours |
| Markets | United States, Canada, Mexico, Australia |
| Price Range | $120K – $450K |
The Cessna 425 Conquest I is a pressurized twin-engine business aircraft that represents a significant step up in capability from single-engine performers. Introduced in the early 1980s, it combines reliable Continental TSIO-520 turbocharged engines with modern avionics and a comfortable cabin capable of carrying 6-8 passengers. The aircraft features a pressurized cabin allowing flight at altitudes up to 25,000 feet, making it suitable for cross-country business travel and overcoming weather systems. The Conquest I is particularly valued in air charter operations, corporate flight departments, and by experienced owner-pilots seeking versatile twin-engine performance without the complexity and cost of larger cabin-class twins. Its relatively modest operating costs compared to larger twins, combined with good useful load and range capabilities, make it a practical choice for regional operators. The aircraft has proven reliable in service with many examples remaining active in the market, though maintenance requirements and fuel consumption must be carefully considered by potential operators.
Maximum Speed: 217 knots
Cruise Speed: 195 knots
Range: 1,200 nautical miles
Service Ceiling: 25,000 feet
Engines: Two Continental TSIO-520-AE turbocharged engines, 290 hp each
Maximum Takeoff Weight: 6,750 lbs
Useful Load: 2,450 lbs
Length: 29 feet 3 inches
Wingspan: 36 feet 11 inches
Pressurization: 6,000 feet cabin altitude at 25,000 feet