The SZD-21 Kobuz is a Polish single seat aerobatic glider, a nimble sailplane built for precision manoeuvres and dynamic soaring. Discover SZD-21 Kobuz aircraft for sale worldwide on AvPay. Browse active SZD-21 Kobuz listings and find available aircraft across the USA, North America, UK, Europe, Asia, Africa, Australia and South America. Connect directly with aircraft brokers, private sellers, flying clubs, flight schools and manufacturers. Explore the full inventory of aircraft for sale on AvPay here!
Finding a SZD-21 Kobuz for Sale on AvPay
AvPay brings together buyers and sellers looking for the SZD-21 Kobuz across the USA, North America, UK, Europe, Asia, Africa, Australia, South America, and beyond. If you want a dedicated aerobatic glider with classic Polish engineering, the Kobuz stands out for its purpose built handling and competition focused design.
Refine your SZD-21 Kobuz search on AvPay with our easy-to-use filters. Quickly find your perfect aircraft by condition, year, total time, location, price, and seller.
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Found your ideal SZD-21 Kobuz? Connect directly with sellers on AvPay via WhatsApp, private message, or phone to discuss condition, aerobatic limitations, and the exact configuration of the SZD-21 Kobuz Aircraft For Sale.
Interesting facts about the SZD-21 Kobuz
✈ The SZD-21 Kobuz was created in Poland as a purpose built aerobatic sailplane rather than a trainer adapted for aerobatics.
✈ The project began under the name SZD-21 Sokół before evolving into the Kobuz prototype series as testing revealed stability and flutter challenges.
✈ The early prototype carried the registration SP-1990 and went through multiple rebuild stages rather than being replaced by an all new airframe each time.
✈ The final production standard, commonly referred to as Kobuz 3, introduced structural and aerodynamic refinements aimed at higher stiffness for high speed manoeuvres.
✈ Kobuz 3 became known for its high aerobatic load limits in period documentation, a key point to verify during any pre buy review for modern operating restrictions.
✈ The airframe uses traditional wood construction methods, so storage history, moisture control, and inspections around high stress joints matter more than on many composite aerobatic sailplanes.
✈ Some surviving Kobuz examples have operated with reduced aerobatic approvals after later life inspections, so buyers should confirm the aircraft’s current permitted manoeuvre set.
✈ The design influenced later Polish aerobatic sailplane thinking, and it is often discussed alongside newer composite aerobatic types that followed in later decades.
Model Variants for buyers to consider when purchasing a SZD-21 Kobuz
The SZD-21 story is best understood through its development variants. The program began as SZD-21 Sokół, then progressed through the initial prototype as SZD-21-2 Kobuz and an updated SZD-21-2A Kobuz 2A as flight testing drove changes to stability and control. Further modification produced SZD-21-2AZ, which marked the final prototype state before the program moved on. The production standard is widely listed as SZD-21-2B Kobuz 3, the version that aimed to deliver an aerobatic sailplane with improved stiffness and more acceptable handling for demanding manoeuvres.
SZD-21 Kobuz Specifications
Information provided here is as a guide only. This information should not be used for flight planning or other aircraft operations. Aircraft model variations, custom specifications, modifications, upgrades & age will have a considerable impact on the details listed below. Please check with the seller, manufacturer or aviation authority for the precise aircraft specifications.
Length: 7.25 m (23 ft 9 in)
Wingspan: 14.00 m (45 ft 11 in)
Height: 1.90 m (6 ft 3 in)
Wing area: 13.5 m² (145.3 sq ft)
Aspect ratio: 14.5:1
Airfoil: NACA 64-1 412
FAQs About the SZD-21 Kobuz
Is SZD-21 Kobuz an aerobatic glider or a general touring sailplane?
The Kobuz sits in the aerobatic sailplane category, and it was conceived around high energy manoeuvres rather than cross country optimisation. Buyers usually choose it for aerobatic handling and heritage value, not for modern glide performance.
Which Kobuz version do most buyers look for today?
Listings commonly reference Kobuz 3, which represents the final development standard associated with small series production. When comparing aircraft, confirm the exact designation on the paperwork and ask for a clear history of any rebuilds from earlier prototype states.
What pre purchase checks matter most on a wooden Kobuz airframe?
Focus on structural condition in high stress zones, condition of bonded joints, and evidence of long term moisture exposure. A buyer should also confirm rigging integrity and look for any recorded operating limitations introduced after inspections.
Can SZD-21 Kobuz still be used for aerobatic competition flying?
That depends on the individual aircraft’s current operating limitations and approvals. Before you buy, confirm permitted manoeuvres, current speed limits, and any restriction history tied to inspections or repairs.
What launch methods are typical for SZD-21 Kobuz operations?
Owners commonly operate the Kobuz with aero tow or winch launch depending on local procedures and airfield equipment. Ask the seller what hooks are fitted and confirm the sailplane’s current limitations for each launch method.
Get help buying a SZD-21 Kobuz
Can’t find the SZD-21 Kobuz aircraft you’re looking for? Get in touch with an Aircraft Broker to help you buy an aircraft via the Aircraft Broker Directory. Alternatively you can browse Aircraft Brokerage and Aircraft Acquisition Services through the aviation marketplace to help you with the purchase of a SZD-21 Kobuz sailplane.
Sell your SZD-21 Kobuz on AvPay
Do you have a SZD-21 Kobuz Aircraft for Sale? Get your glider listed on AvPay and get in front of buyers searching for a SZD-21 Kobuz around the world. AvPay is a Zero Workload Website so you’ll never have to make your own updates and each aircraft listing will be featured on our Social Media Pages, giving you extra visibility in front of our 190,000+ followers. With AvPay you won’t just generate enquiries on your Aircraft Listings. You’ll also generate enquiries through your Aircraft Broker Profile and through each of the Service Listings you include on our Aviation Marketplace Pages. Let AvPay promote your SZD-21 Kobuz for sale.
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Find Finance for buying a SZD-21 Kobuz
Need financing to purchase your SZD-21 Kobuz? Start by sharing the aircraft’s build standard, current limitations, and inspection status with lenders since specialist sailplanes can vary widely by condition. Confirm whether the deal includes trailer, spares, and equipment since that can affect the financed amount. Ask about loan terms that match seasonal flying because many aerobatic sailplanes see concentrated annual use. Plan for a survey and escrow process so the funds release aligns with airworthiness checks and title transfer.
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Find Insurance for a SZD-21 Kobuz
Insuring a SZD-21 Kobuz starts with a clear picture of how you will operate the sailplane, including aero tow, winch, and any aerobatic use allowed by the aircraft’s current limitations. Provide the insurer with hangar or trailer storage details because wooden airframes place extra value on controlled humidity and careful handling. Confirm that the policy covers ground handling, trailering, and spares if you move the glider between sites. Work with an aviation specialist who understands sailplane hull values and can align liability limits with your club, field, and event requirements.
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