Beech F90 King Air vs Cessna 425 Conquest I
Side-by-side specs, range, and real operating costs for up to 5 aircraft.
Mission Performance
Tap to isolateValues normalised across compared aircraft. Fuel Economy is inverted (lower burn = higher score). See table below for raw figures.
Mission Performance Details
| Metric | Beech F90 King Air Beechcraft | Cessna 425 Conquest I Cessna |
|---|---|---|
| Stall Speed | 77 kts | 79 kts |
| Approach Speed | 100 kts | 91 kts |
| Cruise Speed | 261 kts | 260 kts |
| Range | 1,235 nm | 1,339 nm |
| Service Ceiling | 29,802 ft | 30,000 ft |
| Rate of Climb | 2,380 fpm | 2,000 fpm |
| Fuel Burn | 84.0 gph | 68.0 gph |
Flight Profile
Service ceiling, range, and climb rate.
Arc represents the climb-cruise-descent profile based on published service ceiling and range. Climb rate annotated on ascent. FL180 (18,000 ft) shown for reference.
Fuel Burn
Based on published cruise fuel flow
| Metric | Beech F90 King Air Beechcraft | Cessna 425 Conquest I Cessna |
|---|---|---|
| Burn Rate |
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| Trip Fuel |
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| Trip Cost |
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| Cost / hr |
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: trip distance exceeds published range.
Trip time estimated from published cruise speed and distance. Fuel burn is a published cruise figure; actual consumption varies with altitude, loading, and conditions.
Runway Performance
Density altitude adjusted estimates
Takeoff over 50 ft obstacle
Landing ground roll
FAA 10%/1,000 ft DA rule of thumb (FAA-H-8083-25B). Turboprops and jets are less sensitive in practice. Always verify against the POH.
Estimated Operating Costs
| Metric | Beech F90 King Air Beechcraft | Cessna 425 Conquest I Cessna |
|---|---|---|
| Fuel Cost per hour | $504/hr | $408/hr |
| Direct Operating Cost per hour | $970/hr | $885/hr |
| Annual Fixed Costs | ||
| Insurance | —/yr | $16,500/yr |
| Hangar | $8,221/yr | $9,000/yr |
| Annual Inspection | $2,500/yr | $2,500/yr |
| Total Fixed | $10,721/yr | $28,000/yr |
Estimates only. Costs vary by location, pilot profile, and market conditions. See individual aircraft pages for source notes.
Capability, Limits & Dimensions
| Metric | Beech F90 King Air Beechcraft | Cessna 425 Conquest I Cessna |
|---|---|---|
| Useful Load | 3,750 lbs | 3,273 lbs |
| MTOW | 10,950 lbs | 8,600 lbs |
| Seating | 10 | 8 |
| Fuel Capacity | 470 gal | 366 gal |
| Engines | 2× Turboprop | 2× Turboprop |
| Landing Gear | Retractable | Retractable |
| Pressurized | Yes | Yes |
| Dimensions | ||
| Wingspan | 45.9 ft | 44.2 ft |
| Length | 39.8 ft | 35.8 ft |
| Tail Height | 15.1 ft | 12.6 ft |
Payload-Range Map
Origin: · click map to move