S-21 Outbound
High-Performance All-Metal Backcountry & Cross-Country Aircraft
The S-21 Outbound is RANS's premier all-metal high-wing aircraft, engineered for rugged backcountry STOL performance without sacrificing cross-country speed, payload, or cabin comfort.
S-21 Outbound Specifications
Official factory specifications and performance data.
Technical Specifications
Titan 340, Rotax 915iS / 916iS / 912ULS
1,320 lbs Light Sport (LSA) / 1,800 lbs EAB
Titan 340 base configuration
Solo, sea level conditions
Spacious side-by-side seating
Convertible configuration
Generous cargo bay with cargo net
No welding required
Engine Configurations
Select the power and altitude performance tailored to your flying environment.
Titan 340
180 HPMaximum backcountry power and climb rate. Delivers rapid acceleration and heavy payload capacity.
View Spec Sheet (PDF) ↗Rotax 916iS
160 HPModern high-altitude performance with full FADEC engine management and exceptional fuel efficiency.
View Spec Sheet (PDF) ↗Rotax 915iS
141 HPProven turbocharged power for high-density altitude airfields and efficient cruising.
View Spec Sheet (PDF) ↗Rotax 912ULS
100 HPLightweight, reliable powerplant optimal for Light Sport Aircraft (LSA) gross weight compliance.
View Spec Sheet (PDF) ↗Kit Components & Construction
Built from CNC-machined structural aluminum with matched-hole tooling. No welding required. Estimated build duration is 700 to 1,000 hours.
All-metal precision formed rudder assembly
Vertical stabilizer structural kit
Tail control surfaces and trim tabs
All-metal ribbed wing structures with leading-edge landing light cutouts
Steel cage forward structure with aluminum aft cone (Taildragger or Trike)
Windshield, Lexan doors, floorboards, seats, vent system, torque tubes & controls
Instrument Panel & Cabin Options
Plan your dual-screen glass cockpit layout using official CAD templates or choose factory Ready-To-Fly avionics.
S-21 Outbound Kit Build Estimator
Select your kit options below to calculate estimated build hours, workshop footprint, and engine specifications.
S-21 Outbound Photo Archive
Click any image to view in high resolution.
The RANS Builder Journey
From initial aircraft discovery to your first backcountry flight — an intuitive step-by-step path.
Explore Aircraft & Specs
Compare performance numbers, engine options (Titan 340, Rotax 915/916/912), landing gear layouts, and gross weights.
Request Factory Quote
Submit your custom kit or Ready-To-Fly configuration form directly to the RANS factory sales team.
Receive Your Kits
Receive modular precision-formed sub-kits (Rudder, Tail, Wings, Fuselage) delivered in custom protective crates.
Build with Confidence
Follow detailed text manuals, CAD drawings, and video guides with zero welding required during assembly.
Access Builder Support
Leverage official RANS technical documentation, factory builder workshops, and community builder photos.
First Flight & Beyond
Complete your airworthiness inspection, take to the skies, and join 40+ years of active RANS aviators.
S-21 Support Resources
Project Newsletters
Read builder updates, factory modifications, and technical notes.
View Newsletters ↗Paint Schemes & Codes
Explore popular vinyl layout schemes and factory paint color codes.
Paint Info ↗Connect with RANS Designs
Have questions about the S-21 Outbound kit options, build times, lead times, or builder workshops? Contact the factory team in Hays, Kansas.
4600 Hwy 183 Alternate
Hays, Kansas 67601 USA
RANS factory headquarters is located directly on the airfield. Experience a factory demonstration flight with our pilot team.
