The H.D. 40 has a compound structure in which metal has been used at stress points. It is powered by one BMW IV 460 H.P. engine.

Circular presenting a description of the Heinkel H.E.5 commercial seaplane. Its primary important characteristics are a short start, agreeable flying qualities, and long radius of action. Details of the design and flying characteristics are provided.

Circular presenting a description of the Ernst Heinkel Aircraft Corporation He 64 light airplane. Details of the design, fuselage, wings, tail unit, landing gear, engine, safety devices and equipment, flying qualities, and photographs are provided.

Circular presenting a description of the Heinkel HE 70 commercial airplane. Details of the fuselage, wing, tail surfaces, landing gear, power plant, instrumentation, flying qualities, and some photographs are provided.

Circular presenting a description of the Hendy 302, which is a two-seat, low-wing cantilever monoplane with a hinged cabin top. A description of the design, flying qualities, and photographs are provided.

Circular presenting a description of the I.A.R. pursuit airplane. Details of the design, ailerons, fuselage, fuel tanks, landing gear, and flying qualities are provided.

The G 24 is a commercial airplane with three engines and a monoplane wing. It is known for its all metal construction and stabilizers.

The three engine Junkers commercial Airplane, type G 31 is a further development of the earlier G 24. It is an all metal low wing monoplane with a total engine output of 1100-1200 HP.

Circular describing the Junkers G 38, which is an airplane designed to minimize fuel consumption and maximize reliability of functioning. A description of the design, construction and equipment, wings, engines, characteristics, drawings, and photographs are provided.

Circular presenting a description of the Junkers-Junior light airplane, which is a cantilever all-metal low wing monoplane. Details of the wings, interior, fuselage, elevator, controls, landing gear, fuel, engines, characteristics, drawings, and photographs are provided.

Circular presenting a description of the Kay 331 gyroplane, which is an all-metal single-seater with a Pobjoy R engine. A description of the propeller, control, fuselage, tail, flight characteristics, specifications, drawings, and photographs are provided.

Report presenting a description of the Latécoère 28, a commercial monoplane. A detailed description of the design, flight characteristics, and special features are provided.

Report describing the Latécoère 38-0, which is a transatlantic mail seaplane. A description of the design, flight characteristics, and some of its special features is provided.

Circular presenting a description of the Latécoère 501. A more detailed description of the general characteristics, power plant, wings, planing fins, hull, tail surfaces, and flying characteristics are provided.

Circular presenting a description of the Latécoère 521, which was the largest aircraft built in France at the time. A more detailed description of the wings, hull, accommodation for passengers and officers, fuel system, controls, and flight characteristics is provided.

Circular describing the Levasseur 8, which is an adaptation of a naval airplane adopted by the French Navy. Details of the wings, fuselage, landing gear, fuel, engine, and flying qualities are provided.

Circular presenting a description of the Le 0.240, which is a cantilever monoplane invented by the Lioré-Olivier Company. Information regarding the wings, profile, fuel tanks, construction, ailerons, hull, controls, and flight characteristics is provided.

Report presenting a description of the Lioré-Olivier LeO 194 seaplane and a particular series of flights made over several months. Its fuselage is made entirely of wood. It has 6 gasoline tanks each with a capacity of 255 liters. It is a single engine biplane with wings mounted above the body of the seaplane.

The Vega is a high wing monoplane suitable for commercial purposes. It can seat 6 passengers or 100 cubic feet of cargo. Various characteristics of the aircraft are described, including the wings, control surfaces, landing gear, and power plant.

The M. 39 was designed by Castoldi to compete in the Schneider Cup Race of 1926 (Norfolk, VA). It is a monoplane with engine mounted in the fuselage, resting on two wing and hull mounted floats.

Circular describing the Mauboussin M 11 touring airplane, which is a two-place high-wing monoplane that is an enlargement of the M 10. Details of the wing, ailerons, fuselage, cockpit, fuel tanks, landing gear, tail, characteristics, performances, drawings, and photographs are provided.

Circular describing the Messerschmidt M.29 touring airplane, which is a two-seat cantilever monoplane that was specifically developed as a sport and touring airplane. Details of the flight characteristics, wing structure, fuselage, tail surfaces, landing gear, controls, power plant, instruments, miscellaneous details, characteristics, drawings, and photographs are provided.

Societe Provencale de Constructions Aeronautiques, builder of the "Meteore 63" has constructed a three engine (biplane) seaplane which has met conditions for a seaworthy certificate of the first class. A description of the design, hull, tail, power plant, characteristics, performances, drawings, and photographs are provided.

Circular presenting a description of the Mono-Spar light airplane, which is a small twin-engined low-wing cabin monoplane. A description of the design, structural features, characteristics, flying qualities, photographs, and drawings are provided.