This structured digital collection provides comprehensive technical documentation for the Klemm Kl 35, one of Germany's most successful light aircraft designs of the 1930s and 1940s. With 11 manuals covering the A, B, and D variants, this is the definitive reference library for serious restorers, historians, and researchers working with this versatile trainer and touring aircraft.

Definitive Collection with Free Lifetime Updates: This is a living collection that we continuously expand and refine. As we acquire additional Klemm Kl 35 documentation, technical bulletins, or variant-specific materials, we update this collection and provide free lifetime updates to all purchasers. Your one-time purchase guarantees access to all future additions and improvements to this collection.

Historical Note

The Klemm Kl 35 represents one of the most successful chapters in German light aircraft development during the interwar period and World War II era. Designed by Hanns Klemm and produced by Leichtflugzeugbau Klemm G.m.b.H. in Böblingen, Württemberg, the Kl 35 first flew in the mid-1930s and quickly established itself as a versatile, reliable, and economical aircraft that would serve in both civilian and military roles throughout its production life.

The Kl 35 was developed as a two-seat light touring and training aircraft, featuring a low-wing monoplane configuration with fixed landing gear equipped with streamlined wheel spats (fairings). Powered by various engines including the Hirth HM 60R and HM 504 four-cylinder air-cooled inverted inline engines (producing approximately 80-105 horsepower depending on variant), the aircraft offered excellent performance for its class while maintaining economical operation. The clean, modern design reflected the advanced aeronautical engineering capabilities of German manufacturers in the 1930s.

The Kl 35's design philosophy emphasized simplicity, reliability, and ease of maintenance—characteristics that would prove invaluable during its extensive wartime service. The low-wing configuration provided good visibility for the pilot and passenger/student, while the side-by-side seating arrangement facilitated instruction and communication. The aircraft's wooden structure with fabric covering represented proven construction technology that could be maintained and repaired by skilled craftsmen using readily available materials.

The Kl 35 A variant represented the initial production version, establishing the basic design that would be refined in subsequent variants. The Kl 35 B introduced improvements based on operational experience, featuring enhanced structural strength and refined systems. The Kl 35 D represented a further evolution, optimized for training and touring roles with additional refinements to handling characteristics and equipment installations.

A notable variant was the seaplane version equipped with floats, expanding the aircraft's versatility for water operations. This amphibious capability made the Kl 35 suitable for operations in coastal areas and regions with limited airfield infrastructure, demonstrating the design's adaptability to different operational environments.

With the outbreak of World War II, the Kl 35's role expanded significantly. The aircraft proved invaluable as a primary and advanced trainer for the Luftwaffe, helping to train thousands of pilots throughout the conflict. Its forgiving flight characteristics, reliability, and ease of maintenance made it ideal for flight schools (Flugzeugführerschulen) across Germany and occupied territories. The Kl 35 served in various training establishments, contributing to the development of aviation skills that would prove essential throughout the war years.

The September 1942 and March 1943 dates on the Luftwaffe flight operating instructions (L.Dv.T. 2035 B und D/Fl) in this collection reflect the aircraft's extensive wartime service. These military technical directives (Luftwaffe Dienstvorschrift Technisch) provided standardized operating procedures, maintenance requirements, and technical specifications for Kl 35 aircraft in military service. The documentation reveals how civilian designs were adapted for military training roles, with modifications to equipment, instrumentation, and operational procedures to meet Luftwaffe requirements.

Production numbers were substantial for a light aircraft of this era, with hundreds manufactured between the mid-1930s and the early 1940s. The Kl 35's combination of pleasant handling characteristics, economical operation (typical fuel consumption around 5-6 gallons per hour), and robust construction made it popular among flying schools, aero clubs, and private owners during the pre-war period. During wartime, production focused on meeting military training requirements, with the aircraft playing a crucial role in maintaining the flow of trained pilots for the Luftwaffe.

Following the war, surviving Kl 35 aircraft found new life in civilian aviation across Europe. The type's excellent handling characteristics and economical operation made it popular among flying clubs and private owners during the post-war revival of sport aviation. Many aircraft were refurbished and returned to civilian markings, serving for years in training and touring roles. The Kl 35's docile handling and forgiving nature made it an ideal aircraft for pilots transitioning from military to civilian flying.

Today, the Kl 35 holds a distinguished place in aviation history as an example of German engineering excellence and represents an important link in the evolution of light aircraft design. The few surviving examples are treasured by vintage aircraft enthusiasts and museums as representatives of the golden age of European light aviation. The aircraft's influence extended beyond its production numbers—it helped establish design principles and operational practices that would shape light aircraft development for decades to come.

Manuals Included in This Collection

Kl 35 Variant A Documentation (1 manual):

• Kl 35 A Spare Parts List - Kl 32 A Aircraft, Illustrated Parts Catalog Manual, Ersatzteilliste (German Language)

Kl 35 Variant B Documentation (2 manuals):

• Kl 35 B Spare Parts List - Kl 32 B,D - Aircraft, Illustrated Parts Catalog Manual, Ersatzteilliste (German Language)
• Kl 32 B Flight Manual - Kl 32 B, D Flight Operating Instructions Manual, Bedienungsvorschrift Fl (German Language)

Kl 35 Variant D Documentation (3 manuals):

• Kl 32 D Flight Manual - Kl 32 B, D Flight Operating Instructions Manual, Bedienungsvorschrift Fl (German Language)
• Kl 32 D Operating Instructions - Kl 32 – D Operating Instructions, Rüst- und Betriebsanweisung (German Language)
• Kl 35 D Spare Parts List - Kl 32 B,D - Aircraft, Illustrated Parts Catalog Manual, Ersatzteilliste (German Language)

Kl 35 Non-Variant Manuals (Applicable Across Series - 7 manuals):

• Kl 35 Construction Manuals - Kl 35 – Aircraft Construction Data Table: Dimensions and Layout (German Language)
• Kl 35 Short Description - Kl 35 – Intended Use, Verwendungszweck (German Language)
• Kl 35 Systems - Kl 35 Fuel System Training Manual, Ausbildungs-Unterlagen Kraftstoffanlage (German language)
• Kl 35 Slides, Photos and Brochures:
  • Kl 35 - Aircraft Photo Collection
  • Klemm – Promotional Brochure, Klemm-Prospektheft (German Language)
  • Klemm – Photo Collection, Klemm-Fotos (German Language)
  • Klemm – Light Aircraft Advertising Brochure, Leichtflugzeuge Werbeprospekt (German Language)

Note on Multi-Variant Manuals: Some manuals apply to several Kl 35 variants. To avoid duplication, the original file is stored in the folder of the earliest applicable variant. In the folders of other variants, you will find a link pointing to the same document.

This collection provides comprehensive coverage of the Klemm Kl 35 across the A, B, and D variants. The documentation spans construction data tables with dimensions and layout information, intended use descriptions (Verwendungszweck), flight operating instructions (Bedienungsvorschrift Fl) including Luftwaffe military editions dated September 1942 and March 1943, operating and maintenance instructions (Rüst- und Betriebsanweisung), illustrated spare parts catalogs (Ersatzteilliste) from 1937 and 1940, fuel system training materials (Ausbildungs-Unterlagen), and extensive promotional materials including photographs and advertising brochures. These documents provide invaluable insight into the aircraft's design, operation, maintenance, and marketing during both civilian and military service.

Engineering Norms and Standards

The Klemm Kl 35 was designed and manufactured to rigorous German aviation engineering standards of the 1930s and 1940s:

• Wooden Structure Construction: The Kl 35 employed traditional wooden construction methods using spruce and plywood for the wing structure and fuselage framework, covered with fabric. This construction approach allowed for relatively simple repairs and maintenance using readily available materials and traditional woodworking skills. The wooden structure required periodic inspection for moisture damage, wood rot, and fabric deterioration.
• Klemm Engineering Standards: Production followed Leichtflugzeugbau Klemm G.m.b.H. engineering norms for material specifications, quality control, and manufacturing tolerances. These standards governed wood selection and treatment, fabric covering procedures, doping schedules, and structural testing protocols. Hanns Klemm's emphasis on practical, proven design solutions resulted in aircraft that were straightforward to build and maintain.
• German Civil Aviation Standards: The Kl 35 adhered to German civil aviation certification requirements of the period, including structural load testing, flight testing protocols, and documentation standards. These regulations ensured that aircraft met minimum safety and performance standards for civilian operation.
• Luftwaffe Military Standards: Aircraft in military service were subject to Luftwaffe documentation standards (L.Dv.T. - Luftwaffe Dienstvorschrift Technisch), as evidenced by the September 1942 and March 1943 dated flight operating instructions in this collection. These military standards required standardized formatting, comprehensive technical information, maintenance schedules, and regular updates to reflect service experience.
• Hirth Engine Installation Standards: Powerplant installation followed Hirth Motoren G.m.b.H. specifications for the HM 60R and HM 504 engines used in various Kl 35 variants. Standards covered engine mounting, fuel system installation, cooling requirements (air-cooled inverted inline configuration), ignition systems, and maintenance procedures specific to each engine type.
• Training Aircraft Requirements: As a designated training aircraft, the Kl 35 met specific requirements for dual controls, instrumentation visibility from both seats, emergency procedures, and spin recovery characteristics. These standards ensured the aircraft's suitability for ab-initio and advanced pilot training.

These engineering standards represent the quality control framework that governed Kl 35 production throughout the 1930s and 1940s. For restorers and researchers, understanding these period-correct construction methods, material specifications, and maintenance practices provides invaluable insight into the craftsmanship and engineering philosophy that made the Kl 35 one of the most successful light aircraft of its era.

Format and Delivery

• Format: Digital download (PDF)
• Language: German (original period documentation)
• Total Manuals: 11 comprehensive documents
• Variant Coverage: A, B, D (primary production variants)
• Quality: High-resolution scans of original factory manuals, Luftwaffe technical orders, and promotional materials
• Organization: Structured folder hierarchy with variant-specific and general documentation clearly separated
• Delivery: Instant digital download upon purchase
• Updates: Free lifetime updates as additional documentation is acquired and added to the collection

Copyright & Licensing

This digital compilation, structure, indexing and presentation are © Sicuro Publishing. All copyrights are registered with the Canadian Copyright Database. Leichtflugzeugbau Klemm G.m.b.H. is no longer in business, and Online Aviation Library holds collective copyright for their historical documentation.

This collection is licensed for research, education, historical preservation, and restoration purposes.

Disclaimer

This item is sold for historical and reference only. These are either original or copies of manuals and blueprints used when these aircraft were in active duty, now transferred into electronic format. These manuals and blueprints are not meant to be used for current update material for certification/repair, but make an excellent reference for the scholar, collector, modeller or aircraft buffs. For proprietary reasons, we generally only provide civil manuals and blueprints on obsolete aircraft/engines/helicopters. The information is for reference only, and we do not guarantee the completeness, accuracy or currency of any manuals.

Reference herein to any specific commercial products by trade name, trademark, manufacturer, or otherwise, is not meant to imply or suggest any endorsement by, or affiliation with that manufacturer or supplier. All trade names, trademarks and manufacturer names are the property of their respective owners.