Onex vs Sonerai II

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

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Dimensions & configuration

Representative planforms, drawn to shared scale.

Onex
21 ft × 16 ft ⭥ 4 ft
1× Piston Fixed Unpressurized
Sonerai II
19 ft × 19 ft ⭥ 5 ft
1× Piston Fixed Unpressurized

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 OnexSonerai II
Stall speed 43 kt38 kt
Approach speed —50 kt
Cruise speed 135 kt122 kt
Range 465 nm300 nm
Service ceiling 16000 ft13000 ft
Rate of climb 900 fpm500 fpm
Fuel burn 4.0 gph4.0 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.

Onex Avgas
4.0 gph
Baseline
465 nm range 33.8 nm/gal 15 gal usable $26 fuel/hr 3h 45m endurance
Onex: 4.0 gph at cruise, 465 nautical mile published range, 3 hour 45 minute endurance, 33.8 nautical miles per gallon.
Sonerai II Avgas
4.0 gph
Baseline
300 nm range 30.5 nm/gal 10 gal usable $26 fuel/hr 2h 30m endurance
Sonerai II: 4.0 gph at cruise, 300 nautical mile published range, 2 hour 30 minute endurance, 30.5 nautical miles per gallon.
Avgas 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 over 50 ft obstacle

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:
Onex Avgas
$44 /hr
Baseline
Onex: $44 per flight hour — fuel $26, maintenance and reserve $18.
Sonerai II Avgas
$44 /hr
Baseline
Sonerai II: $44 per flight hour — fuel $26, maintenance and reserve $18.
Onex Piston
$3,564 /yr Baseline
Onex: $3,564 per year — insurance withheld, hangar $2,964, annual inspection $600.
Sonerai II Piston
$3,674 /yr Baseline
Sonerai II: $3,674 per year — insurance withheld, hangar $3,074, annual inspection $600.

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

+ cargo
×
1
Onex Piston
1 / 1 seats cargo 15 gal / 15 gal fuel 260 lbs wet payload 350 lbs useful 950 lbs MTOW
Sonerai II Piston
2 / 2 seats cargo 10 gal / 10 gal fuel 384 lbs wet payload 444 lbs useful 950 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

+ cargo
×
1

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