Piper PA-34 Seneca vs Vulcanair P.68

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

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Dimensions & configuration

Representative planforms, drawn to shared scale.

Piper PA-34 Seneca
38.9 × 28.6 ft 9.9 ft tall
2× Piston Retractable Unpressurized
Vulcanair P.68
39.4 × 31.3 ft 11.2 ft tall
2× 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 Piper PA-34 SenecaVulcanair P.68
Stall speed 67 kt—
Approach speed 90 kt—
Cruise speed 200 kt160 kt
Range 828 nm1012 nm
Service ceiling 25000 ft18000 ft
Rate of climb 1550 fpm1100 fpm
Fuel burn 24.0 gph21.0 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.

Piper PA-34 Seneca Avgas
24.0 gph
Baseline
828 nm range 8.3 nm/gal 122 gal usable $156 fuel/hr 5h 04m endurance
Piper PA-34 Seneca: 24.0 gallons per hour at cruise, 828 nautical mile published range, 5 hour 4 minute endurance, 8.3 nautical miles per gallon.
Vulcanair P.68 Avgas
21.0 gph
Baseline
1,012 nm range 7.6 nm/gal 177 gal usable $136 fuel/hr 8h 25m endurance
Vulcanair P.68: 21.0 gallons per hour at cruise, 1,012 nautical mile published range, 8 hour 25 minute endurance, 7.6 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:
Piper PA-34 Seneca Avgas
$385 /hr
Baseline
Piper PA-34 Seneca: $385 per flight hour — fuel $156, maintenance and reserve $229.
Vulcanair P.68 Avgas
$204 /hr
Baseline
Vulcanair P.68: $204 per flight hour — fuel $136, maintenance and reserve $68.
Piper PA-34 Seneca Piston
$21,000 /yr Baseline
Piper PA-34 Seneca: $21,000 per year — insurance $8,500, hangar $6,000, annual inspection $6,500.
Vulcanair P.68 Piston
$16,071 /yr Baseline
Vulcanair P.68: $16,071 per year — insurance $5,500, hangar $8,071, 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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Piper PA-34 Seneca
6 / 6 seats 122 / 122 gal fuel 605 lb wet payload 1,337 lb useful 4,750 lb MTOW
Vulcanair P.68
6 / 6 seats 177 / 177 gal fuel 437 lb wet payload 1,499 lb useful 4,594 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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