Beech King Air 90 vs Cessna Conquest II

Side-by-side specs, range, and real operating costs for up to 5 aircraft.

Aircraft

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Mission Performance

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Values normalised across compared aircraft. Fuel Economy is inverted (lower burn = higher score). See table below for raw figures.

Mission Performance Details

Metric Beech King Air 90 Beechcraft Cessna Conquest II Cessna
Stall Speed 88 kts 86 kts
Approach Speed 100 kts 105 kts
Cruise Speed 245 kts 298 kts
Range 1,468 nm 2,200 nm
Service Ceiling 27,620 ft 35,000 ft
Rate of Climb 1,870 fpm 2,435 fpm
Fuel Burn 78.0 gph 63.0 gph

Flight Profile

Service ceiling, range, and climb rate.

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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 & Range

Range, endurance, and what the fuel costs by the hour.

Beech King Air 90 Jet A
78.0 gph
baseline
1,468 nm range 474 gal usable 6h 04m endurance 3.1 nm/gal $468 fuel/hr
Beech King Air 90: 78.0 gallons per hour at cruise, 1,468 nautical mile published range, 6 hour 4 minute endurance, 3.1 nautical miles per gallon.
Cessna Conquest II Jet A
63.0 gph
−15.0 gph
2,200 nm range 475 gal usable 7h 32m endurance 4.7 nm/gal $378 fuel/hr
Cessna Conquest II: 63.0 gallons per hour at cruise, 2,200 nautical mile published range, 7 hour 32 minute endurance, 4.7 nautical miles per gallon.
Jet A range each cell = 1 hr of cruise · width scales with speed

Bars show published still-air range. Endurance is usable fuel divided by the published cruise burn. Estimates only. Always verify against the POH.

Runway Performance

Density altitude adjusted estimates

Outside Air Temp
0°F57°F115°F
Field Elevation
SL4,0008,000 ft
Density Altitude

Takeoff over 50 ft obstacle

Landing ground roll

Base distance DA penalty
Scale: 6,000 ft

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

Scale:
Beech King Air 90Jet A
$1,329 /hr
Beech King Air 90: $1,329 per flight hour — fuel $468, maintenance and reserve $861.
Cessna Conquest IIJet A
$1,400 /hr
Cessna Conquest II: $1,400 per flight hour — fuel $378, maintenance and reserve $1,022.
Beech King Air 90 Turboprop
$23,249 /yr
Beech King Air 90: $23,249 per year — insurance withheld, hangar $10,981, annual inspection $12,268.
Cessna Conquest II Turboprop
$41,771 /yr
Cessna Conquest II: $41,771 per year — insurance $20,000, hangar $11,741, annual inspection $10,030.

Estimates only. Costs vary by location, pilot profile, and market conditions. See individual aircraft pages for source notes.

Capability & limits

Each bar stacks your selected occupants against full fuel and the aircraft's useful-load limit (the black line). The open gap between them is spare payload. Add an occupant and the gap closes; once it's gone, fuel has to give.

Occupants at 190 + 30 lb each
1
Beech King Air 90
10 / 10 seats 474 / 474 gal fuel 384 lb wet payload 3,560 lb useful 10,100 lb MTOW
Cessna Conquest II
10 / 10 seats 475 / 475 gal fuel 718 lb wet payload 3,900 lb useful 9,850 lb MTOW

Occupants at 190 + 30 lb each. Fuel at 6.7 lb/gal jet-A, 6.0 lb/gal avgas.

Dimensions & configuration

Representative planforms, drawn to shared scale.

Beech King Air 90
50.2 × 35.5 ft 14.2 ft tall
2× Turboprop Retractable Pressurized
Cessna Conquest II
49.3 × 39.0 ft 13.2 ft tall
2× Turboprop Retractable Pressurized

Payload-Range Map

Full fuel ← → Max payload

Origin: · two fingers to move map

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