Cessna Conquest I vs Commander 690B
Live Market Snapshot
Current asking-price market, aggregated across multiple marketplaces · refreshed daily
Cessna Conquest I
- For sale now
- 13
- Median asking
- $1,162,500
- Range
- $867,150–$2,135,000
- Model years available
- 1978–1985
Commander 690B
- For sale now
- 5
- Model years available
- 1976–1979
Live data from AeroGurus, aggregated daily across the used-aircraft market. Figures are current asking prices, not appraisals — confirm with a pre-buy inspection.
Full Specs Comparison
Swipe to see all specs
| Spec / Model | Cessna Conquest I | Commander 690B |
|---|---|---|
|
|
|
| Price Range | $867,150 – $2,135,000 | $682,250 – $990,500 |
| Category | Multi Engine Turboprop | Multi Engine Turboprop |
| Model Specifications | ||
| Seats | 8 | 7 |
| Horsepower | 450 HP | 717 HP |
| Cruise Speed | 283 kts (524 km/h) | 283 kts (524 km/h) |
| Range | 1,500 nm (2,778 km) | 1,467 nm (2,717 km) |
| Service Ceiling | 30,000 ft (9,144 m) | 31,000 ft (9,449 m) |
| Max Gross Weight | 8,600 lbs (3,901 kg) | 10,325 lbs (4,683 kg) |
| Useful Load | 3,000 lbs (1,361 kg) | 2,500 lbs (1,134 kg) |
| Fuel Capacity | 182.0 gal (689 L) | — |
| Fuel Burn | 70.0 GPH (265 L/h) | 70.0 GPH (265 L/h) |
| TBO | 3,500 hrs | — |
| Overhaul Cost | $200,000 | — |
| Annual Fixed | $55,000 | — |
| Hourly Variable | $650 | $375 |
| Engines | 2 x Turboprop | 2 x Turboprop |
Cost of Ownership
EstimateCessna Conquest I
Fuel$385/hr
Variable$650/hr
Annual Fixed$55,000/yr
Total (200 hrs/yr)
$185,000/yr
Commander 690B
Fuel$385/hr
Variable$375/hr
Which Should You Buy: Cessna Conquest I or Commander 690B?
Pick the Conquest I if…
- More seats — 8 vs 7.
- Longer range — 1500 nm vs 1467 nm.
- Newer design — production from 1980 vs 1972.
- More inventory — 14 listings vs 6.
Pick the 690B if…
- Budget matters — from $682,250 vs $867,150, you save ~$184,900.
- Lower operating cost — ~$375/hr vs $650/hr.
Auto-generated from current market data and published specs. Confirm with a pre-buy inspection and professional appraisal.
Frequently Asked Questions
Which is better, Cessna Conquest I or Commander 690B?
It depends on your mission and budget.
The Conquest I cruises at 283 kts with 1,500 nm range.
The 690B cruises at 283 kts with 1,467 nm range.
Review the specs table above to find which fits your flying profile.
How do prices compare?
Commander 690B: from $1,025,000.
Prices vary by year, hours, avionics, and condition. Always get a pre-buy inspection.
What's the difference between Cessna Conquest I and Commander 690B?
Conquest I engine: PRATT & WHITNEY PT6A-112 (450 hp).
Seats: 8 vs 7.
Cruise: 283 vs 283 kts.
Range: 1500 vs 1467 nm.
Which is cheaper to operate per hour?
Conquest I: about $650/hr variable cost.
690B: about $375/hr variable cost.
Variable cost includes fuel, reserves and overhaul accruals. Annual fixed costs (hangar, insurance, annual inspection) add to the total.
Which has more seats and useful load?
Conquest I: 8 seats / 3,000 lb useful load.
690B: 7 seats / 2,500 lb useful load.
Useful load = max gross weight minus empty weight; it determines how much fuel plus payload you can carry.
How does maintenance compare — TBO and overhaul cost?
Conquest I: 3,500-hour TBO, overhaul ~$200,000.
Reaching the time-between-overhaul (TBO) triggers a mandatory engine/airframe rebuild that affects resale value.
Disclaimer: All prices and cost estimates are from third-party sources for informational purposes only. Always obtain professional appraisal and inspection before purchase.
Prices updated daily · Data: FAA Registry, NTSB · About our data