Dassault Falcon/Mystère 20 vs Learjet 31

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

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Dimensions & configuration

Representative planforms, drawn to shared scale.

Dassault Falcon/Mystère 20
53.5 × 56.3 ft 17.6 ft tall
2× Jet Retractable Pressurized
Learjet 31
43.8 × 48.7 ft 12.3 ft tall
2× Jet 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 Dassault Falcon/Mystère 20Learjet 31
Stall speed 96 kt119 kt
Approach speed 119 kt113 kt
Cruise speed 435 kt456 kt
Range 1810 nm1250 nm
Service ceiling 42000 ft51000 ft
Rate of climb 3330 fpm5480 fpm
Fuel burn 280.0 gph202.0 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.

Dassault Falcon/Mystère 20 Jet A
280.0 gph
Baseline
1,810 nm range 1.6 nm/gal 1400 gal usable $1,680 fuel/hr 5h 00m endurance
Dassault Falcon/Mystère 20: 280.0 gallons per hour at cruise, 1,810 nautical mile published range, 5 hour 0 minute endurance, 1.6 nautical miles per gallon.
Learjet 31 Jet A
202.0 gph
Baseline
1,250 nm range 2.3 nm/gal 615 gal usable $1,212 fuel/hr 3h 02m endurance
Learjet 31: 202.0 gallons per hour at cruise, 1,250 nautical mile published range, 3 hour 2 minute endurance, 2.3 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:
Dassault Falcon/Mystère 20 Jet A
$3,360 /hr
Baseline
Dassault Falcon/Mystère 20: $3,360 per flight hour — fuel $1,680, maintenance and reserve $1,680.
Learjet 31 Jet A
$2,882 /hr
Baseline
Learjet 31: $2,882 per flight hour — fuel $1,212, maintenance and reserve $1,670.
Dassault Falcon/Mystère 20 Jet
$36,703 /yr Baseline
Dassault Falcon/Mystère 20: $36,703 per year — insurance withheld, hangar $34,203, annual inspection $2,500.
Learjet 31 Jet
$15,501 /yr Baseline
Learjet 31: $15,501 per year — insurance withheld, hangar $13,001, annual inspection $2,500.

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.

lb

+ lb / pax

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Dassault Falcon/Mystère 20
10 / 10 seats 1,400 / 1,400 gal fuel 2,620 lb wet payload 12,000 lb useful 28,660 lb MTOW
Learjet 31
10 / 10 seats 615 / 615 gal fuel 1,866 lb wet payload 5,986 lb useful 17,000 lb MTOW

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

Payload-Range Map

Origin: · two fingers to move map

lb

+ lb / pax

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