Cessna 425 Conquest I vs Piper Cheyenne II

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

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Dimensions & configuration

Representative planforms, drawn to shared scale.

Cessna 425 Conquest I
44 ft × 36 ft ⭥ 13 ft
2× Turboprop Retractable Pressurized
Piper Cheyenne II
43 ft × 35 ft ⭥ 13 ft
2× Turboprop Retractable Pressurized

Flight Profile

Service ceiling, range, and climb rate.

Tap legend to isolate

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.

Mission Performance

Stall, approach, cruise, range, ceiling and climb: best values are at the top.

Mission performance specifications
Specification Cessna 425 Conquest IPiper Cheyenne II
Stall speed 84 kt86 kt
Approach speed 91 kt91 kt
Cruise speed 260 kt283 kt
Range 1339 nm1350 nm
Service ceiling 33400 ft31000 ft
Rate of climb 2000 fpm2800 fpm
Fuel burn 68.0 gph75.0 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.

Fuel Burn & Range

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

Cessna 425 Conquest I Jet A
68.0 gph
Baseline
1,339 nm range 3.8 nm/gal 366 gal usable $408 fuel/hr 5h 22m endurance
Cessna 425 Conquest I: 68.0 gph at cruise, 1,339 nautical mile published range, 5 hour 22 minute endurance, 3.8 nautical miles per gallon.
Piper Cheyenne II Jet A
75.0 gph
Baseline
1,350 nm range 3.8 nm/gal 382 gal usable $450 fuel/hr 5h 05m endurance
Piper Cheyenne II: 75.0 gph at cruise, 1,350 nautical mile published range, 5 hour 5 minute endurance, 3.8 nautical miles per gallon.
Jet A range each cell = 1 hr of cruise · width scales with speed

Bars show published still-air range: select a cell to view cruise-hours and fuel usage. Endurance is full tank at the displayed cruise burn rate; the extra is reserve and economy margin. 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

Takeoff over 50 ft obstacle

Landing ground roll

Density Altitude

Monte cristo

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

Hourly direct and annual fixed costs

Scale:
Cessna 425 Conquest I Jet A
$1,045 /hr
Baseline
Cessna 425 Conquest I: $1,045 per flight hour — fuel $408, maintenance and reserve $637.
Piper Cheyenne II Jet A
$1,273 /hr
Baseline
Piper Cheyenne II: $1,273 per flight hour — fuel $450, maintenance and reserve $823.
Cessna 425 Conquest I Turboprop
$28,000 /yr Baseline
Cessna 425 Conquest I: $28,000 per year — insurance $16,500, hangar $9,000, annual inspection $2,500.
Piper Cheyenne II Turboprop
$11,902 /yr Baseline
Piper Cheyenne II: $11,902 per year — insurance withheld, hangar $9,402, annual inspection $2,500.

Estimates only. Hourly direct operating cost, based on fuel price and reserves; Annual fixed costs (insurance, hangar, and inspection). Costs vary by location, pilot profile, and market conditions. See individual aircraft pages for source notes.

Capability & limits

Payload vs useful load limit

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Cessna 425 Conquest I Turboprop
8 / 8 seats 366 gal / 366 gal fuel 821 lbs wet payload 3,273 lbs useful 8,600 lbs MTOW
Piper Cheyenne II Turboprop
7 / 7 seats 382 gal / 382 gal fuel 1,041 lbs wet payload 3,600 lbs useful 9,000 lbs MTOW

Shows selected occupants against full fuel, within the aircraft's useful-load limit. Fuel weight at 6.7 lb/gal jet-A, 6.0 lb/gal avgas; pax and luggage are 190 + 30 . Change payload weights in global settings.

Payload-Range Map

Origin: · two fingers to move map

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