Cessna Conquest I vs Commander 690B-II
Live Market Snapshot
Current asking-price market, aggregated across multiple marketplaces · re-checked on a rolling daily cycle
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-II
No active listings right now.
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-II |
|---|---|---|
|
|
|
| Price Range | $867,150 – $2,135,000 | $695,000 |
| Category | Multi Engine Turboprop | Multi Engine Turboprop |
| Model Specifications | ||
| Seats | 8 | — |
| Horsepower | 450 HP | — |
| Cruise Speed | 283 kts (524 km/h) | — |
| Range | 1,500 nm (2,778 km) | — |
| Service Ceiling | 30,000 ft (9,144 m) | — |
| Max Gross Weight | 8,600 lbs (3,901 kg) | — |
| Useful Load | 3,000 lbs (1,361 kg) | — |
| Fuel Capacity | 182.0 gal (689 L) | — |
| Fuel Burn | 70.0 GPH (265 L/h) | — |
| TBO | 3,500 hrs | — |
| Overhaul Cost | $200,000 | — |
| Annual Fixed | $55,000 | — |
| Hourly Variable | $650 | — |
| Engines | 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-II
Frequently Asked Questions
Which is better, Cessna Conquest I or Commander 690B-II?
It depends on your mission and budget.
The Conquest I cruises at 283 kts with 1,500 nm range.
Review the specs table above to find which fits your flying profile.
How do prices compare?
Commander 690B-II: from $695,000.
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-II?
Conquest I engine: PRATT & WHITNEY PT6A-112 (450 hp).
Which is cheaper to operate per hour?
Conquest I: about $650/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.
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 re-checked on a rolling cycle — most within a few days · Data: FAA Registry, NTSB · About our data