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The Focke-Wulf Ta 154 Moskito was a fast twin-engined German night fighter aircraft designed by Kurt Tank and produced by Focke-Wulf during late World War II. Only a few were produced, proving to have less impressive performance than the prototypes. Kurt Tank's team at Focke-Wulf had been working for some time on a fast attack-bomber aircraft named Ta 211, so named because it planned to use an uprated Jumo 211R engine. The intended "Ta 211" design was a high-wing twin-engined design, built primarily of plywood, bonded with a special phenolic resin adhesive called Tego film. The only large-scale use of metal was in the pressurized cockpit. The project's designation was changed to Reichsluftfahrtministerium (RLM—Ministry of Aviation) airframe number 8-154 (hence Ta 154) when it became apparent that the most suitable engine for the aircraft was the more powerful Jumo 213, and that Junkers could not deliver the Jumo 211R in time due to technical and production problems. The 154 was also allocated the name "Moskito" as a form of recognition of the Royal Air Force's (RAF) de Havilland Mosquito. It was at about this time that the light and very fast de Havilland Mosquito, also made of wood, arrived over Germany. It quickly racked up an impressive record; in its first 600 bombing missions, only one was shot down, compared to an average of 5% for RAF medium and heavy bombers. Erhard Milch personally requested a purpose-built German answer, and selected the 154. Infighting within German circles started almost immediately, because the RLM and night fighter units — as well as Ernst Heinkel himself — still wanted the Heinkel He 219. Milch took this personally, and spent the better part of the next two years trying to have the 219 program terminated, partly against Ernst Heinkel's wishes.

The Asso X Jewel is an all - wood, low wing, single engine, two tandem seats ultralight aircraft, designed by Italian designer Giuseppe Vidor. This aircraft is one of his many wooden designs, marketed by Vidor's Asso Aerei company, like the Asso V Champion, Asso IV Whisky and Asso VI Junior. The aircraft kit/plans are specified for the Rotax 912, but it is also one of the very few aircraft reported to be using the Sauer S 2100 ULT engine. Variants Millennium Master A composite airplane, evolved from the Asso X Jewel. Pelegrin Tarragon A composite airplane, evolved from the Millennium Master. Blackshape Prime A composite airplane, evolved from the Millennium Master.

The Kawasaki Ki-56 (Japanese: 一式貨物輸送機, Type 1 Freight Transport) was a Japanese two-engine light transport aircraft used during World War II. It was known to the Allies by the reporting name "Thalia". 121 were built between 1940 and 1943. The Kawasaki Ki-56 was derived from the Lockheed Model 14 Super Electra aircraft that the Kawasaki Kokuki Kogyo Kabushiki Kaisha (The Kawasaki Aircraft Engineering Company Limited) had built under licence. In September 1939 Kawasaki was asked by the Koku Hombu to design an improved version as Ki-56. A number was also built by Tachikawa Hikoki K.K. The Japanese invasion of Sumatra in the Dutch East Indies campaign began with a paratroop drop from Ki-56 transports on Airfield P1 and the oil refineries near Palembang. Royal Air Force Hawker Hurricane fighters flying from P1 to locate the Japanese invasion fleet passed the incoming Ki-56s, but thought them to be friendly Lockheed Hudsons (also developed from the Lockheed Model 14) returning from a raid. The defending anti-aircraft gunners at P1 were equally fooled, until the parachutes began to open. Once the AA guns opened fire one transport was shot down, another force-landed, and others veered off course, but the paratroop drop was effective and the airfield and oil installations were overrun.

The Emigh A-2 Trojan was an American single-engined cabin cantilever monoplane designed and built by the Emigh Trojan Aircraft Company of Douglas, Arizona. The A-2 had side-by-side seating in an enclosed cabin for a pilot and passenger. Of all metal construction it had a fixed tricycle landing gear and was powered by a Continental A90 flat-four piston engine. Many major components of the aircraft were designed to be interchangeable to simplify and lower manufacturing costs. The vertical and horizontal stabilizers where interchange able as well as the rudder and elevators. A symmetrical section of the wing was interchangeable and the upper and lower fuselage skins were also identical. A total of 58 Trojans had been completed when production ceased in 1950.

The Helio Twin Courier is a twin-engined version of the Helio Courier, with only seven examples being produced. Known by Helio as the model H-500 this STOL aircraft mounted twin Lycoming engines on top of the high-set wing, close to the fuselage. With the engines mounted in this manner, lateral and over-the-nose visibility were much improved while the propellers were kept clear of cabin doors and away from possible debris damage during rough field operations. This was a tail-wheel design, so the vertical component of propeller thrust assisted STOL take-off performance from rough fields. In 1967 or 68, work was started on a redesign of the Twin Courier in a tricycle-gear configuration for the commercial market, since many firms which desired STOL capability had regulations which required multi-engine aircraft. The company ran out of money and the project was terminated. The aircraft structure of the Helio Stallion, a single-engine turboprop version of the more successful Helio Courier, was based on the design of the Twin Courier. The Twin Courier could seat six and first flew in April 1960, being awarded FAA certification on June 11, 1963. (The Twin Courier met FAA requirements marginally and was certificated to meet immediate needs for service in Vietnam, on the understanding that the design would not be marketed commercially. Thus, the redesign mentioned above.) Only seven examples were built, these receiving the United States Armed Forces designation U-5A. One was reported to have been evaluated by US Army Special Forces. Furthermore, fully automatic full-span, leading-edge slats were fitted along with high-lift flaps.

The Stits SA-11A Playmate is a homebuilt aircraft design that features a rapid wing-folding mechanism for trailering or storage. The SA-11A is a single engine, side-by-side configuration seating, tricycle gear, strut-braced, low wing monoplane. The fuselage is welded steel tubing with aircraft fabric covering. The wings have a quick release mechanism that allows them to fold and lock alongside the fuselage in 15–30 seconds. Safety mechanisms were put in place so pilots could visually inspect that the wings were locked in place. A small sideways seat in the rear can accommodate 150 lb (68 kg) of luggage or a light passenger. The prototype was donated by Ray Stits in 1969 to the EAA AirVenture Museum in Oshkosh, Wisconsin. Its engine went into the Stits SA-9A "Skycoupe" prototype for testing and development.

The Hovey Whing Ding is an extremely minimalist American ultralight aircraft that was designed by Bob Hovey of Saugus, California, first flying in 1971. The aircraft is supplied in the form of plans for amateur construction by the Vintage Ultralight and Lightplane Association of Marietta, Georgia. Hovey set out to create the lightest aircraft to carry a person ever to fly, with the resulting design being a biplane, with a plywood box filled with Polyurethane foam serving as the fuselage, supporting the pilot's seat. The aircraft features a conventional fabric-covered empennage carried at the end of a short tailboom made of aluminum tube. The horizontal stabilizer is made from reinforced cardboard. Early versions used wing warping for roll control, while later models used full-span ailerons. The specified pusher configuration powerplant is a McCulloch chainsaw engine turning a hand-carved wooden propeller via a chain drive. The first prototype had a monowheel undercarriage, with skids under the wingtips, but this was soon changed to twin mainwheels carried on a spring-type strut. With no brakes to stop the aircraft after landing, pilots were supposed to press their heels against the mainwheels. The Whing Ding was designed long before the US FAR 103 Ultralight Vehicles regulations were introduced, but it fully conforms to the rules. The Whing Ding helped generate interest in ultralight aircraft and lead to the ultralight boom of the late 1970s and 1980s. Hovey conceived of the aircraft as an experimental project and not as a form of transportation. Due to its unreliable powerplant he intended it to only be flown over open areas where a safe landing could be carried out at any time. The plans were complex to follow and were not intended to make construction easy. Construction time typically is about 400 hours. The Whing Ding was marketed as plans, and sold extremely well - by 1979, over 6,000 sets had been purchased. In 2011 the plans were still available, and at no cost. Depending on the density altitude and the weight of the pilot, some builders discovered that the aircraft was under powered and suffered from too small a wing area to climb out of ground effect. Variants Whing Ding Initial version Whing Ding II Improved version, incorporating a higher seat to prevent pilots dragging their feet on the ground to stop the aircraft, which resulting in broken bones in some cases.