Diamond DA50 RG vs Diamond Twin Star

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

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Dimensions & configuration

Representative planforms, drawn to shared scale.

Diamond DA50 RG
44 ft × 30 ft ⭥ 10 ft
1× Piston Retractable Unpressurized
Diamond Twin Star
44 ft × 28 ft ⭥ 8 ft
2× Piston Retractable 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 Diamond DA50 RGDiamond Twin Star
Stall speed 71 kt67 kt
Approach speed 77 kt85 kt
Cruise speed 172 kt175 kt
Range 745 nm1215 nm
Service ceiling 20000 ft18000 ft
Rate of climb 780 fpm1550 fpm
Fuel burn 12.4 gph10.4 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.

Diamond DA50 RG Jet A
12.4 gph
Baseline
745 nm range 13.9 nm/gal 49 gal usable $74 fuel/hr 3h 57m endurance
Diamond DA50 RG: 12.4 gph at cruise, 745 nautical mile published range, 3 hour 57 minute endurance, 13.9 nautical miles per gallon.
Diamond Twin Star Jet A
10.4 gph
Baseline
1,215 nm range 16.8 nm/gal 76 gal usable $62 fuel/hr 7h 18m endurance
Diamond Twin Star: 10.4 gph at cruise, 1,215 nautical mile published range, 7 hour 18 minute endurance, 16.8 nautical miles per gallon.
Jet A range each cell = 1 hr of cruise · width scales with speed tank-dry · at this cruise burn

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:
Diamond DA50 RG Jet A
$158 /hr
Baseline
Diamond DA50 RG: $158 per flight hour — fuel $74, maintenance and reserve $84.
Diamond Twin Star Jet A
$135 /hr
Baseline
Diamond Twin Star: $135 per flight hour — fuel $62, maintenance and reserve $73.
Diamond DA50 RG Piston
$30,500 /yr Baseline
Diamond DA50 RG: $30,500 per year — insurance $22,000, hangar $6,000, annual inspection $2,500.
Diamond Twin Star Piston
$22,088 /yr Baseline
Diamond Twin Star: $22,088 per year — insurance $11,000, hangar $8,088, annual inspection $3,000.

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
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1
Diamond DA50 RG Piston
5 / 5 seats cargo 49 gal / 49 gal fuel 904 lbs wet payload 1,232 lbs useful 4,407 lbs MTOW
Diamond Twin Star Piston
4 / 4 seats cargo 76 gal / 76 gal fuel 790 lbs wet payload 1,299 lbs useful 4,407 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
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1

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