The SAI KZ VIII was an aerobatic sport aircraft first built by Skandinavisk Aero Industri in Denmark in 1949. It was a low-wing cantilever monoplane of conventional configuration with fixed tailwheel undercarriage and a single seat. The KZ VIII was custom-built by SAI for the Danish aerobatic display team Sylvest Jensen Luftcirkus, in which Peter Steen piloted the aircraft in some 50 performances in summer 1950. At the same time, a full set of parts for a second aircraft was produced, but this was not assembled until 1959.

A third machine has been built as a replica.

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Engine: 1 × de Havilland Gipsy Major, 108 kW (145 hp)
Wingspan: 7.20 m (23 ft 8 in)
Wing area: 8.6 sq.m (96 sq.ft)
Length: 19 ft 2 in
Height: 5 ft 11 in
Empty weight: 407 kg (895 lb)
Aerobatic weight: 1265 lb
Gross weight: 650 kg (1,430 lb)
Maximum speed: 300 km/h (190 mph)
Service ceiling: 5,000 m (16,400 ft)
ROC: 480 fpm
Crew: One, pilot
Loading: 12G

Designed by Viggo Kramme and Karl Gustav Zeuthen, the SAI KZ VII Lærke (Danish: “Lark”) was a light utility aircraft built in Denmark shortly after the Second World War. Based on the SAI KZ III air ambulance, the KZ VII was a strut-braced, high-wing monoplane of conventional design with an enclosed cabin for four seats. The wings were made of wood, although covered mainly in fabric.

First flown on 11 November 1946, fifty-six aircraft were built by Skandinavisk Aero Industri, and another 22 partially completed aircraft were destroyed in a factory fire in 1947. The Danish Air Force operated 10 of the type as trainers between 1950 and 1977.

Seven were supplied to Switzerland with 145 hp Continental C-145-2 engines with Aeromatic constant-speed airscrews.

Engine: 1 × Continental C125, 93 kW (125 hp)
Wingspan: 9.60 m (31 ft 6 in)
Wing area: 13.0 sq.m (140 sq.ft)
Length: 6.56 m (21 ft 6 in)
Height: 2.10 m (6 ft 11 in)
Empty weight: 464 kg (1,022 lb)
Gross weight: 867 kg (1,911 lb)
Maximum speed: 200 km/h (125 mph)
Cruising speed: 185 km/h (115 mph)
Range: 725 km (450 miles)
Service ceiling: 4,115 m (13,500 ft)
Rate of climb: 2.8 m/s (590 ft/min)
Crew: One, pilot
Capacity: 3 passengers

The SAI KZ III was a Danish light utility aircraft used by the Danish Air Ambulance Service and Danish Air Force.

The Germans permitted the build of a plane for the Danish Air Ambulance Service. The first flight was on September 11, 1944, when Denmark was still under German occupation. Two prototypes were built unser occupation. The second was smuggled to Sweden in a railway truck and test flown there.

The plane is upper-wing, of mixed construction, canvas and plywood covered.

Production commenced after the liberation of Denmark and sixty-four were produced from 1946 to 1947. Operators were the Danish Air Ambulance Service and Royal Danish Air Force. For ambulance duties, the KZ-III gas a hinged panel in the fuselage left-side through a stretcher may be loaded.

Engine: 1 × Blackburn Cirrus Minor II, 100 hp (75 kW)
Wingspan: 9.60 m (31 ft 6 in)
Wing area: 13.00 sq.m (140 sq.ft)
Length: 6.53 m / 21 ft 6 in
Height: 2.10 m / 6 ft 9 in
Empty weight: 419 kg (922 lb)
Loaded weight: 650 kg (1,430 lb)
Wing loading: 50 kg/sq.m (10 lb/sq.ft)
Power/mass: 0.11 kW/kg (0.07 hp/lb)
Maximum speed: 185 km/h (115 mph)
Cruise: 106 mph
Range: 500 km / 310 mi
ROC: 700 fpm
Service ceiling: 4,150 m (13,612 ft)
Seats: 2

An original one-off built by L.A. Kraemer of Rapid City, South Dakota, the LK-1 Rapid Rambler was registered N6002V.

Engine: Continental A-65-8, 65 hp
Wing span: 24 ft 6 in
Length: 18 ft 3 in
Cruise: 95 mph
Seats: 1

Having a twin boom pusher configuration and (on the second prototype) a conventional fixed, spatted main undercarriage, the Kora 1 is a side-by-side two seater intended primarily for training; it was designed by Messrs Schultes, Seidel and Putz, and the firm of Kortenbach & Rauh is best known for its range of furniture and other products for the garden and household.

The prototype Kora 1 made its maiden flight on 13 September 1973 and had a forwards-retracting nosewheel and the main wheels retracting backwards into the tail booms. The second prototype, which first flew on 9 April 1976, had a fixed main undercarriage to save weight and complexity, and was still undergoing flight testing at the beginning of 1978, at which time it had not yet been decided whether to start production, although orders had already been received for about a dozen Koras.

The power plant is a 65hp Limbach SL 1700EC1 air-cooled ‘flat four’ driving a Hoffman two-blade variable-pitch feathering propeller. The Kora is of all-wood construction, with cantilever high wings which have Schempp-Hirth air brakes in the upper surfaces. The pod-type fuselage nacelle has roomy side-by-side seating in a cockpit 47in wide, the canopy opening sideways to starboard. The twin tail booms end in twin fins and rudders which have the tailplane mounted on top of them. The fixed main undercarriage units on the second prototype consist of two spatted main wheels set on thin steelsprung legs cantilevered from the fuselage underside.

Second prototype
Engine: Limbach SL 1700 EC1, 48.5 kW / 65 hp
Span: 18.0 m / 59 ft 0.75 in
Length: 7.4 m / 24 ft 3.25 in
Height: 1.85.m / 6 ft 0.75 in
Wing area: 19.44 sq.m / 209.25 sq ft
Aspect ratio: 16.65
Wing section: Wortmann FX-66-S-1967161
Empty weight: 510 kg / 1,124 lb
Max weight: 750 kg / 1,653 lb
Water ballast: None
Max wing loading 38.58 kg/sq.m / 7.9 lb/sq ft
Max level speed at S/L: 110 kt / 205 km/h / 118 mph
Stalling speed: 35 kt / 65 km/h
Max rate of climb at S/L: 180 m/min / 590 ft/min
Min sinking speed: 0.85 m/sec / 2.79 ft/sec at 53 mph / 51 kt / 95 km/h
Best glide ratio: 30:1 at 59 mph / 54 kt / 100 km/h

Owner-builder Harold Koehler started his Goodyear racer only to have the engine develop serious trouble on take off during the 1947 race. Pilot Bob Gaffney was not injured.