Enjoy
Freedom
1:53
glide ratio
TOP PERFORMANCE, EXCELLED.
STEMME TWIN VOYAGER S12. TWO AIRCRAFT UNITED IN ONE UNBEATABLY PRECISE MACHINE.

ADVENTURE, INTEGRATED
FOLDABLE PROPELLER, TURBO-CHARGED ENGINE.
The Stemme foldable and variable pitch propeller is installed in the Stemme Twin Voyager S12 and disappears completely into the propeller dome. To start the propeller, the dome slides out and the propeller blades unfold. It takes just 5 seconds to convert from glide mode to engine mode.
CONQUER SPACE
SEPARATE BAGGAGE COMPARTMENT.
A separate baggage compartment is integrated into the fuselage. By providing space for hand luggage, the compartment significantly expands your touring options.
PREMIUM EQUIPMENT
ELECTRIC TRIM, DISCONNECTABLE AUTOPILOT.
An autopilot is part of the richly equipped cockpit. In disconnected mode it provides an extremely direct steering feeling, unbeatably immediate and sensitive. With its innovative electrical trim equipment, the Stemme Twin Voyager S12 puts the perfect tool for superlative performance into its pilot’s hands.
SHARE THE VIEW
SAFE SIDE-BY-SIDE COCKPIT, ADDITIONAL STORAGE SPACE.
The solid and safe one-piece canopy offers great panoramic views. The side-by-side alignment is ideal for sharing workloads, using the same avionics or simply for pure recreation—just as in conventional planes. The center-tunnel-fairing provides additional storage space for your smartphone, notebook and other onboard companions.
STANDARDS,
OUTNUMBERED.THE STEMME TWIN VOYAGER S12
TECHNICAL DATA.

- Weights and Dimensions
- Performance Data
- Engine
- Electrics
- Cockpit
- Airframe & Wings
- Avionics (Options)
Weights and Dimensions
- MTOM:
900 kg (1,984 lbs) - Wingspan:
25 m (82.02 ft) - Wingspan (folded):
11.4 m (37.40 ft) - Wing area:
19.95 m² (214.74 ft2) - Height:
1.75 m (5.74 ft) - Length:
8.42 m (27.6 ft)
Performance Data
- Glide ratio:
1:53* - Cruise speed up to:
259 km/h (140 kt) TAS @ 10,000 ft - Climb rate:
Better than 3,28 m/s (645 ft/min)* - Range of up to:
1,759 km (950 nm) - *to be confirmed following flight test
Engine
- Power plant:
ROTAX 914 F2/S1 Turbo - MTOP:
84,5 kw - MCP:
73,4 kw - Fuel capacity (center wing):
120 l (31.7 US gal) - Fuel consumption at 55% MCP:
13 l/h (3.4 US gal/h)
Electrics
- Solar panels
- LED lighting equipment, AVEO Starlet (ACL and position light integrated in winglets)
- USB power outlet
- 2 separated electrical systems for engine and Avionics, each supplied by a dedicated Lithium-Iron-Phosphate Battery
- Gooseneck microphone
- External power supply receptacle for ground engine start
Cockpit
- Different interior colors and premium material options with low noise ambience
- Comfort seats for pilot and co-pilot
- Tinted canopy
- Lockable windows
Airframe & Wings
- Retractable undercarriage
- 2 × 60 l fuel tanks
- Winglets with Starlet LED Lights
- Foldable wings
- Propeller Dome with integrated Collision Avoidance LED Stripe (optional)
Avionics (Options)
- Soaring computer LX9070 with digital variometer LX V8 (or optional LX V80)
- Dynon EFIS-D10A (optional)
- Dynon Autopilot (optional)
- ADS-B receiver with integrated FLARM
- Mode-S Transponder cl. 1
Contact
Do not hesitate to ask for whatever you are interested in. We will be happy to answer all your questions.
STEMME AUSTRALIA – SALES
Point of contact
Address
PO Box 649
Daylesford
3460 Victoria
Australia
Stemme AG
Point of contact
Address
Flugplatzstraße F2, Nr.6-7
15344 Strausberg
Germany
GB AIRCRAFT SP. Z.o.o
Point of contact
Address
Ul. Narbutta 83 C13
02-524 Warszawa
Poland
STEMME USA, INC.
Point of contact
Address
Columbia Metro Airport, 2404 Edmund Hwy.
SC 29170 West Columbia
USA
Gemstone Aviation Ltd
Point of contact
Address
Gamston Airport
DN22 0QL Retford
United Kingdom
Stemme Africa
Point of contact
Address
Berghaan St
9922 Gariepdam
South Africa
Mountain Soaring
Point of contact
Address
Kranebitter Allee 105
6020 Innsbruck
Austria
NOVAERO
Point of contact
Address
Hangar Nova Aero
Aeroporto
13.501-500 Rio Claro, SP
Brazil