High-Performance Composite Aircraft
Altitude Adjustment Aviation CC, trading as Sabre Aircraft, is the official distributor of the JK-05 Junior in South Africa. We bring world-class composite aircraft technology to the South African aviation market.
With expert knowledge and dedicated support, Sabre Aircraft ensures you receive the highest quality service from initial inquiry through delivery and beyond.
Located at Eagles Creek Airfield, we provide comprehensive support for the JK-05 Junior. Our team understands the unique requirements of South African pilots and delivers tailored solutions.
We combine international manufacturing excellence with local expertise to serve the South African aviation community.
Strut high-wing aircraft with glass and carbon fiber construction for optimal strength-to-weight ratio.
Spacious 1.2m wide cockpit with comfortable composite seats for pilot and passenger.
170 km/h cruising speed with excellent visibility and handling characteristics.

The JK-05 Junior features a revolutionary shell structure made entirely of advanced composites. All major airframe assemblies utilize glass or carbon fiber materials, creating a lightweight yet incredibly strong foundation.
The fuselage forms a self-supporting shell, locally stiffened with 3D material technology. This innovative approach houses a double cockpit in the front section with side-by-side seating, providing excellent visibility and comfort for both occupants.
The shell is technologically divided into two symmetrical halves with integrated stiffeners and a floor-trunk plate that's glued during assembly. This construction method ensures structural integrity while minimizing weight.
The JK-05 Junior's cockpit measures 1.2 meters in width, providing generous space for two occupants seated side-by-side. This configuration enhances communication and shared flight experience.
Composite shell seats offer both comfort and safety, designed specifically for the aircraft's performance envelope. The ergonomic layout ensures easy access to all controls and instruments.
The wind-up canopy is crafted from UV-resistant acrylic glass (PMMA), mounted on a composite frame and divided along the plane of symmetry.
Opening upwards and inwards from a central pillar, the canopy design maximizes visibility while providing easy entry and exit.
The unit connecting the wings is a flat steel tubular truss, providing exceptional strength and reliability while maintaining optimal weight distribution.
The vertical stabilizer is integral with the fuselage, creating a seamless aerodynamic profile and enhanced structural efficiency.
Self-supporting composite main undercarriage legs with braked main wheels and steered front wheel coupled to the rudder.
The JK-05 Junior features rectangular wings with a characteristic narrowing at the fuselage, specifically designed to improve pilot visibility during all phases of flight. This thoughtful design element enhances safety and situational awareness.
The wings utilize the NN-1817 airfoil profile, renowned for its resistance to leading edge contamination and exceptional aerodynamic characteristics. This profile was extensively tested on the PW-5 "SMYK" glider, proving its reliability and performance.
The wing structure employs shell sandwich construction with a load-bearing girder supported by a strut. This design provides optimal strength while maintaining the lightweight characteristics essential for efficient flight performance.
The slotted flaperon spans the entire wing and features shell structure construction made from carbon laminate. This material choice ensures the necessary high torsional stiffness while achieving the lowest possible weight.
The flaperon is hung to the wing on five booms and driven at the fuselage, providing precise control response and meeting anti-flutter requirements.
The wing interior contains no complicated installations or control systems, reducing maintenance requirements and potential failure points.
This clean design philosophy extends throughout the aircraft, emphasizing reliability and ease of maintenance for operators.
Classic horizontal tail with rectangular contour and shell structure made of advanced composites for optimal aerodynamic efficiency.
Composite shell rudder construction provides precise directional control with minimal weight penalty.
Pusher control systems ensure responsive handling and direct pilot feedback throughout the flight envelope.
Spring-loaded elevator trimmer with electrical adjustment allows precise trim control for various flight conditions.
The JK-05 Junior is powered by the proven ROTAX 912 UL engine, delivering 80 horsepower of reliable performance. This engine is renowned worldwide for its efficiency and dependability in light aircraft applications.
Two connected fuel tanks with a total capacity of 70 liters are built into the fuselage behind the cockpit, providing excellent range and endurance for extended flights.
km/h for efficient cross-country flight
km/h in horizontal flight
km/h for safe slow-flight operations
m/s for excellent performance
The JK-05 Junior demonstrates impressive short field performance with a takeoff run of just 80 meters. This capability opens up access to smaller airfields and strips.
Landing run is equally impressive at 100 meters, providing flexibility in destination choices and enhanced safety margins.
The JK-05 Junior's dimensions are optimized for performance and hangar storage. With a wingspan of 10.58 meters and length of 5.7 meters, the aircraft fits comfortably in standard hangars while providing excellent flight characteristics.
kg including GRS (ballistic recovery system)
kg with GRS for safe operations
kg for passengers, fuel, and baggage
The JK-05 Junior consumes just 10 liters per hour during normal operations, making it one of the most economical aircraft in its class. This efficiency translates to lower operating costs and extended range.
With a 70-liter fuel capacity, the aircraft can fly for approximately 7 hours at cruise settings, providing excellent endurance for cross-country flights and training missions.
Two composite shell seats with glass and carbon fiber reinforcement, customizable upholstery colors, and two sets of seat belts.
Side air inlets provide fresh air circulation throughout the cockpit for pilot and passenger comfort.
Single joystick positioned centrally between seats for elevator and aileron control in the basic configuration.
The JK-05 Junior features sophisticated yet straightforward control systems designed for intuitive operation. Control planes are powered by a system of rods and torsion tubes, providing direct mechanical feedback to the pilot.
Elevator and aileron control is achieved via the central joystick located between the seats, offering precise handling characteristics. The rudder is controlled by two sets of pedals positioned in front of both the left and right seats.
Electric control of flaps and elevator trimmer is managed by two sets of buttons on the joystick head, allowing the pilot to make adjustments without removing hands from the primary controls. Main wheel brakes are operated by a lever on the joystick.
Engine power (gas) is controlled with levers positioned on the sides in the aircraft cockpit for easy access and precise power management.
Mixture composition (choke) is adjusted with a lever on the left side of the instrument panel, allowing optimization for altitude and conditions.
All engine controls are positioned for intuitive operation and minimal pilot workload during all phases of flight.
The ROTAX 912 UL engine is fixed to the fuselage on a tubular steel frame using rubber shock absorbers. This mounting system effectively isolates engine vibration from the airframe.
The design ensures smooth operation while maintaining structural integrity and reducing pilot fatigue during extended flights.
An Aero-Sail three-blade propeller with 1.72-meter diameter provides efficient thrust conversion. The pitch is adjustable on the ground for performance optimization.
Carbon composite engine covers are fastened with the Cam-Lock quick coupler system for easy maintenance access.
Thermostat-based automatic coolant temperature control maintains optimal engine operating temperature.
Coolant temperature indicators for both left and right sides provide comprehensive engine monitoring.
System ensures consistent engine performance across varying flight conditions and ambient temperatures.
The comprehensive fuel system includes two connected tanks with a total capacity of 70 liters, strategically built into the fuselage behind the cockpit. This positioning optimizes weight distribution and center of gravity.
A settler and fuel filter ensure clean fuel delivery to the engine, protecting critical components and ensuring reliable operation. Rubber fuel lines provide flexibility and vibration isolation throughout the system.
The fuel gauge provides accurate monitoring of remaining fuel, while an electric fuel pump offers backup capability and assists with engine starting and high-altitude operations.
Battery and alternator provide reliable electrical power for all aircraft systems and instruments.
Electric starter, ignition system, and fuel pump ensure reliable engine operation.
Electric motors power flap and trimmer adjustments for precise flight control.
Comprehensive engine work indicators and fuel gauge provide essential flight information.
All switches are positioned for intuitive operation and easy identification. The dual ignition switch system provides redundancy for enhanced safety.
Electric flap and trimmer controls allow precise adjustments during all phases of flight.
Provides accurate airspeed information for safe flight operations across all speed ranges.
Precise altitude indication essential for navigation and airspace compliance.
Displays rate of climb or descent for optimal flight path management.
Transverse inclinometer ensures coordinated flight and proper bank angle.
Magnetic compass provides reliable heading information for navigation.
Flap and trimmer position indicators show current control surface settings.
Displays engine RPM for proper power management and monitoring.
Coolant temperature indicators for left and right sides ensure optimal engine operation.
Charging voltage indicator monitors electrical system health.
Fuel gauge and pressure gauge provide comprehensive fuel system information.
Engine operating hour meter tracks maintenance intervals.
The JK-05 Junior comes standard with a white exterior finish, providing a clean, professional appearance that's easy to maintain and reflects heat effectively.
The cockpit interior is finished in gray, offering a neutral background that reduces glare and provides excellent contrast for instrument reading.
Custom paint schemes are available to personalize your aircraft and make it stand out on the ramp.
The JK-05 Junior offers an impressive speed range from a safe 55 km/h stall speed to a never-exceed speed (Vne) of 240 km/h, providing versatility for various flight operations.
meters per second
meters required
meters required
Exceptional climb performance of 6 m/s combined with short takeoff and landing distances makes the JK-05 Junior ideal for operations from smaller airfields and strips.
The JK-05 Junior includes a GRS (ballistic recovery system) as standard equipment, providing an additional layer of safety for occupants in emergency situations.
Two independent ignition switches ensure engine reliability and provide redundancy for enhanced safety during flight operations.
Advanced composite construction provides exceptional structural strength while maintaining optimal weight, enhancing crashworthiness.
High-wing configuration and large acrylic canopy provide outstanding visibility for enhanced situational awareness and collision avoidance.
The JK-05 Junior's design philosophy emphasizes simplicity and accessibility. With no complicated installations inside the wings and straightforward control systems, maintenance is streamlined.
Cam-Lock quick coupler system on engine covers provides rapid access for routine inspections and maintenance tasks.
The ROTAX 912 UL engine is renowned for reliability and has extensive support networks worldwide. Standard components reduce maintenance costs and parts availability concerns.
Composite construction requires minimal maintenance compared to traditional metal aircraft structures.
Short field performance and rugged construction make the JK-05 Junior ideal for bush flying and remote airstrip operations.
Side-by-side seating, excellent visibility, and forgiving handling characteristics make it perfect for flight instruction.
Efficient fuel consumption, comfortable cockpit, and 170 km/h cruise speed enable enjoyable cross-country flights.
Advanced composites provide strength with minimal weight for optimal performance.
Composite materials resist corrosion and environmental degradation better than traditional metals.
Composite structures require less routine maintenance and inspection than metal airframes.
Molded composite surfaces provide excellent aerodynamic efficiency and attractive appearance.
The 1.2-meter wide cockpit provides generous shoulder room for both occupants. Composite seats are designed for comfort during extended flights while providing proper support.
Side air inlets ensure fresh air circulation, maintaining a comfortable cabin environment even during warm weather operations.
The large acrylic canopy and high-wing configuration provide outstanding visibility in all directions. The wing's characteristic narrowing at the fuselage further enhances downward visibility.
UV-resistant materials ensure long-term clarity and protection from sun exposure.
The JK-05 Junior's control system design emphasizes harmony and natural feel. The rod and torsion tube system provides direct mechanical feedback, allowing pilots to feel the aircraft's response intuitively.
The central joystick position is ideal for both left and right seat occupants, making the aircraft equally suitable for pilot flying from either position. This is particularly valuable for flight training operations.
Electric flap and trimmer controls integrated into the joystick head allow adjustments without removing hands from primary flight controls, enhancing safety and reducing pilot workload during critical phases of flight.
ROTAX 912 UL has decades of successful service in light aircraft worldwide.
Extensive service network ensures parts availability and maintenance support.
80 HP provides excellent performance while maintaining fuel efficiency.
Proper maintenance ensures thousands of hours of reliable operation.
The NN-1817 profile was specifically chosen for its exceptional characteristics. Originally tested on the PW-5 "SMYK" glider, this airfoil demonstrates excellent resistance to leading edge contamination.
This contamination resistance is crucial for maintaining performance in real-world conditions where insects, rain, or dust may affect the wing's leading edge.
The profile's favorable aerodynamic characteristics contribute to the aircraft's efficient cruise performance and gentle stall characteristics.
The strut support allows for a lighter wing structure while maintaining necessary strength and stiffness.
Strut-braced design eliminates the need for heavy internal wing spars, reducing complexity and weight.
External strut configuration allows for simple visual inspection of critical structural components.
The tricycle landing gear configuration provides excellent ground handling characteristics and visibility during taxi operations. The nose wheel steering is coupled to the rudder pedals, providing intuitive directional control on the ground.
Self-supporting composite main undercarriage legs demonstrate the versatility of composite construction. These legs provide necessary strength and flexibility while maintaining low weight.
Main wheels feature brakes operated together via a lever on the joystick, allowing for effective braking without requiring separate toe brakes. Optional laminated fairings can be fitted to reduce drag and enhance appearance.
Configuration provides unobstructed downward visibility for ground reference and traffic awareness.
Extensive acrylic glazing offers panoramic visibility in all directions.
Characteristic narrowing at fuselage enhances visibility during turns and approaches.
UV-resistant materials maintain clarity over years of sun exposure.
Advanced composite construction and proven ROTAX power combine cutting-edge materials with reliable performance.
Low fuel consumption, minimal maintenance requirements, and efficient design reduce operating costs significantly.
From short field operations to cross-country cruising, the JK-05 Junior excels in diverse roles and conditions.
Ballistic recovery system, excellent visibility, and forgiving handling characteristics prioritize occupant safety.
South Africa's high-altitude airfields require aircraft with good climb performance. The JK-05 Junior's 6 m/s climb rate and efficient wing design handle altitude operations effectively.
The ROTAX 912 UL engine maintains good performance at altitude, ensuring reliable operations from highveld airfields.
Composite construction resists corrosion from humidity and environmental factors. The UV-resistant canopy withstands intense South African sun without degradation.
The aircraft's design handles variable weather conditions encountered across South Africa's diverse geography.
Forgiving handling characteristics and excellent visibility make the JK-05 Junior ideal for ab-initio training.
Side-by-side seating allows effective communication and demonstration during flight instruction.
Economical operation allows students to build hours affordably while developing skills.
The JK-05 Junior is perfect for recreational pilots seeking an affordable, capable aircraft for weekend adventures. Short field performance opens access to smaller airstrips and scenic destinations.
Comfortable side-by-side seating makes it ideal for sharing the flying experience with family or friends. The spacious cockpit and excellent visibility enhance the enjoyment of flight.
Low operating costs mean more time in the air and less worry about expenses, making flying accessible and sustainable as a hobby.
170 km/h cruise speed covers distance efficiently while maintaining fuel economy.
70-liter fuel capacity provides approximately 7 hours endurance at cruise settings.
Spacious cockpit and good ventilation ensure comfort during extended flights.
Proven ROTAX engine and simple systems provide confidence for long-distance travel.
liters per hour for economical operations
HP providing excellent performance efficiency
kg keeping operating costs low
The JK-05 Junior's operating economics make aircraft ownership accessible. Low fuel consumption, minimal maintenance requirements, and efficient design translate to affordable flying hours.
Sabre Aircraft brings extensive aviation experience to the South African market. Our team understands both the JK-05 Junior and the unique requirements of South African operations.
We provide comprehensive support from initial inquiry through delivery and beyond, ensuring you have the information and assistance needed.
Based at Eagles Creek Airfield, we're accessible to prospective owners throughout the region. Visit us to see the aircraft, discuss specifications, and experience the quality firsthand.
Our location provides convenient access for demonstrations, inspections, and ongoing support.
S25 54 27.00 : E028 02 10.00
125.8 MHz for communication
Accessible airfield with excellent facilities for demonstrations and operations





Explore our comprehensive photo gallery showcasing the JK-05 Junior from multiple angles. See the quality of construction, attention to detail, and beautiful design that makes this aircraft special.
The JK-05 Junior can be flown with a Private Pilot License (PPL) or Sport Pilot License, depending on local regulations. Contact Sabre Aircraft for specific South African requirements.
The aircraft has side-by-side seating for two occupants - pilot and one passenger. The 1.2-meter wide cockpit provides comfortable space for both.
With an empty weight of 299 kg and maximum weight of 472.5 kg (both including GRS), the useful load is 173.5 kg for passengers, fuel, and baggage.
With 70 liters of fuel and consumption of 10 l/h, the aircraft can fly approximately 7 hours at cruise speed, providing a range of approximately 1,190 km with reserves.
Yes, the JK-05 Junior is well-suited for grass runway operations. Its short takeoff run of 80 meters and landing run of 100 meters make it ideal for smaller airfields.
The aircraft performs well at altitude, with a climb rate of 6 m/s. The ROTAX 912 UL engine maintains good performance at the high-altitude airfields common in South Africa.
Maximum speed in horizontal flight is 205 km/h, with a never-exceed speed (Vne) of 240 km/h. Cruising speed is 170 km/h for optimal efficiency.
The JK-05 Junior features advanced composite construction using glass and carbon fiber materials. This provides excellent strength-to-weight ratio and corrosion resistance.
The aircraft is powered by a ROTAX 912 UL engine producing 80 horsepower. This engine is renowned worldwide for reliability and efficiency in light aircraft.
Yes, the JK-05 Junior includes a GRS (ballistic recovery system) as standard equipment, providing an additional safety feature for emergency situations.
The aircraft uses an Aero-Sail three-blade propeller with a diameter of 1.72 meters. The pitch is adjustable on the ground for performance optimization.
Operating costs are very economical. With fuel consumption of 10 l/h and minimal maintenance requirements, the JK-05 Junior is one of the most affordable aircraft to operate in its class.
The aircraft requires standard maintenance per manufacturer specifications. The ROTAX engine has well-established maintenance intervals, and composite construction requires less maintenance than traditional metal aircraft.
While the composite construction and UV-resistant canopy can withstand outdoor storage, hangar storage is recommended to protect the aircraft and extend component life.
Yes, the JK-05 Junior is excellent for flight training. Side-by-side seating, forgiving handling, excellent visibility, and economical operation make it ideal for instruction.
Sabre Aircraft (Altitude Adjustment Aviation CC) is the official distributor of the JK-05 Junior in South Africa, providing sales and support services.
Yes, contact Sabre Aircraft to arrange a viewing at Eagles Creek Airfield. We can schedule demonstrations and answer all your questions in person.
Sabre Aircraft provides ongoing support including maintenance guidance, parts sourcing, and technical assistance. We're committed to supporting JK-05 Junior owners throughout their ownership experience.
Yes, various customization options are available including paint schemes, avionics packages, and optional equipment. Discuss your requirements with Sabre Aircraft.
Standard safety features include a ballistic recovery system (GRS), dual ignition system, excellent visibility, composite seats with proper restraints, and forgiving handling characteristics.
The GRS deploys a ballistic parachute in emergency situations, allowing the entire aircraft to descend safely. This provides an additional safety option beyond traditional emergency procedures.
The stall speed is 55 km/h, providing a safe margin for approach and landing operations. The aircraft has gentle stall characteristics with good warning.
Yes, the JK-05 Junior demonstrates good stability in turbulent conditions. The high-wing configuration and proper design provide comfortable flight characteristics.
The JK-05 Junior offers excellent value with modern composite construction, proven ROTAX power, and comprehensive standard equipment at a competitive price point.
Composite construction provides superior strength-to-weight ratio, corrosion resistance, smooth aerodynamic surfaces, and reduced maintenance compared to traditional metal construction.
The ROTAX 912 UL is proven worldwide with excellent reliability, fuel efficiency, global support network, and strong performance characteristics for light aircraft.
High-wing design provides excellent downward visibility, easy ground access, natural stability, and protection for occupants in the event of a forced landing.
Contact Sabre Aircraft for current certification status and regulatory information specific to South African aviation authorities.
The aircraft requires periodic inspections per manufacturer specifications and South African aviation regulations. Sabre Aircraft can provide detailed inspection schedules.
Regulatory requirements for commercial operations vary. Contact Sabre Aircraft and consult with South African aviation authorities regarding specific commercial use cases.
Complete documentation including maintenance manuals, operating handbooks, and certification documents are provided with each aircraft.
The best way to appreciate the JK-05 Junior is to experience it firsthand. Contact Sabre Aircraft to schedule a demonstration flight at Eagles Creek Airfield.
During your visit, you'll have the opportunity to inspect the aircraft's construction quality, sit in the cockpit, and discuss how the JK-05 Junior can meet your aviation needs.
Our team will answer all your questions and provide detailed information about specifications, performance, pricing, and delivery timelines.
Benefit from our extensive aviation knowledge and experience in the South African market.
Comprehensive support continues long after your purchase, ensuring successful ownership.
We stand behind the quality of the JK-05 Junior and our commitment to customer satisfaction.
Sabre Aircraft is more than a distributor - we're your partner in aviation. From initial inquiry through years of ownership, we're here to ensure your success and satisfaction with the JK-05 Junior.
Ready to learn more about the JK-05 Junior? Contact Richard Stubbs at Sabre Aircraft today.
Richard Stubbs
Phone: 083 655 0355
Email: richardstubbs@mweb.co.za
Eagles Creek Airfield
GPS Coordinates:
S25 54 27.00 : E028 02 10.00
Radio Frequency: 125.8 MHz
We look forward to welcoming you and introducing you to the exceptional JK-05 Junior.
JK-05 Junior