Beech King Air 90 vs Beechcraft Twin Bonanza

Side-by-side specs, range, and real operating costs

Aircraft

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Mission Performance

Stall, approach, cruise, range, ceiling and climb — the higher on the chart, the better, on every axis.

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Mission performance specifications
Specification Beech King Air 90Beechcraft Twin Bonanza
Stall speed 88 kt71 kt
Approach speed 100 kt82 kt
Cruise speed 245 kt165 kt
Range 1468 nm825 nm
Service ceiling 27620 ft20000 ft
Rate of climb 1870 fpm1450 fpm
Fuel burn 78.0 gph27.0 gph

Each axis is scaled independently across the compared aircraft and printed in its own units; every vertex sits at the published figure. Higher is better on all axes: Stall, Approach and Fuel Burn are inverted (lower = higher). A missing figure breaks the line at that axis.

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 3.1 nm/gal $468 fuel/hr 6h 04m endurance
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.
Beechcraft Twin Bonanza Avgas
27.0 gph
Baseline
825 nm range 134 gal usable 6.1 nm/gal $176 fuel/hr 4h 57m endurance
Beechcraft Twin Bonanza: 27.0 gallons per hour at cruise, 825 nautical mile published range, 4 hour 57 minute endurance, 6.1 nautical miles per gallon.
Avgas range 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 90 Jet A
$1,329 /hr
Baseline
Beech King Air 90: $1,329 per flight hour — fuel $468, maintenance and reserve $861.
Beechcraft Twin Bonanza Avgas
$350 /hr
Baseline
Beechcraft Twin Bonanza: $350 per flight hour — fuel $176, maintenance and reserve $174.
Beech King Air 90 Turboprop
$23,249 /yr Baseline
Beech King Air 90: $23,249 per year — insurance withheld, hangar $10,981, annual inspection $12,268.
Beechcraft Twin Bonanza Piston
$15,300 /yr Baseline
Beechcraft Twin Bonanza: $15,300 per year — insurance $5,000, hangar $4,800, annual inspection $5,500.

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.

190 + 30 lb Occupants
×
1
Beech King Air 90
10 / 10 seats 474 / 474 gal fuel 384 lb wet payload 3,560 lb useful 10,100 lb MTOW
Beechcraft Twin Bonanza
8 / 8 seats 134 / 134 gal fuel 1,406 lb wet payload 2,210 lb useful 6,300 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
Beechcraft Twin Bonanza
45.2 × 31.5 ft 11.5 ft tall
2× Piston Retractable Unpressurized

Payload-Range Map

Full fuel ← → Max payload

Origin: · two fingers to move map

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