Gulfstream American GA7 vs Piper Seminole

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

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Dimensions & configuration

Representative planforms, drawn to shared scale.

Gulfstream American GA7
36.8 × 29.8 ft 10.3 ft tall
2× Piston Retractable Unpressurized
Piper Seminole
38.6 × 27.6 ft 8.5 ft tall
2× Piston Retractable Unpressurized

Mission Performance

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

Mission performance specifications
Specification Gulfstream American GA7Piper Seminole
Stall speed 71 kt57 kt
Approach speed 85 kt88 kt
Cruise speed 160 kt162 kt
Range 1170 nm700 nm
Service ceiling 17400 ft15000 ft
Rate of climb 1150 fpm1340 fpm
Fuel burn 16.0 gph20.0 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.

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.

Fuel Burn & Range

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

Gulfstream American GA7 Avgas
16.0 gph
Baseline
1,170 nm range 118 gal usable 10.0 nm/gal $104 fuel/hr 7h 22m endurance
Gulfstream American GA7: 16.0 gallons per hour at cruise, 1,170 nautical mile published range, 7 hour 22 minute endurance, 10.0 nautical miles per gallon.
Piper Seminole Avgas
20.0 gph
Baseline
700 nm range 108 gal usable 8.1 nm/gal $130 fuel/hr 5h 24m endurance
Piper Seminole: 20.0 gallons per hour at cruise, 700 nautical mile published range, 5 hour 24 minute endurance, 8.1 nautical miles per gallon.
Avgas 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:
Gulfstream American GA7 Avgas
$104 /hr
Baseline
Fuel-only floor (maintenance & reserve withheld)
Piper Seminole Avgas
$193 /hr
Baseline
Piper Seminole: $193 per flight hour — fuel $130, maintenance and reserve $63.
Gulfstream American GA7 Piston
$10,350 /yr Baseline
Gulfstream American GA7: $10,350 per year — insurance withheld, hangar $7,340, annual inspection $3,010.
Piper Seminole Piston
$9,630 /yr Baseline
Piper Seminole: $9,630 per year — insurance withheld, hangar $7,130, 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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Gulfstream American GA7
4 / 4 seats 118 / 118 gal fuel 504 lb wet payload 1,212 lb useful 3,800 lb MTOW
Piper Seminole
4 / 4 seats 108 / 108 gal fuel 502 lb wet payload 1,150 lb useful 3,800 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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1

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