The Avia B-534 was a single-seat unequal-span biplane fighter aircraft.
The fuselage used a rectangular structure composed of steel tubes, which were attached together using a mixture of bolts and rivets and braced together using streamline wires.
The wing, which had a riveted steel structure and fabric covering, was attached to the fuselage using N struts; similar struts were present in the outer section of the wings attaching the wings together.
The forward section of the fuselage was covered with detachable metal panels, while the rear section had a fabric covering.

Production aircraft were exclusively powered by the Hispano-Suiza 12Y 12-cylinder water-cooled engine, rated to produce a maximum of 850 hp, which was built under license by Avia.
The total fuel capacity was 70 gallons (320 litres); a combined cooler and oil tank was installed beneath the fuselage, while a water-based radiator was also set below the engine.
Engine ignition was provided via the cockpit, along with automated fire-fighting equipment.
Other cockpit equipment included a radio set, oxygen provision, and an adjustable seat and cockpit cover.
Early-built aircraft featured an open cockpit, while later-built examples were furnished with an enclosed cockpit.

The B-534 was furnished with a monoplane tailplane, composed of steel and covered by fabric; similar construction methods were used for the fin and rudder.
Both the rudder and the elevator were statically and aerodynamically balanced.
The undercarriage was of a split-type configuration, being oleo-sprung and equipped with Dunlop-built wheels.
The wheels, which were housed within streamlined fairings, were fitted with brakes; for conducting operations under winter conditions, skis could also be fitted to the undercarriage.
According to reports from pilots who flew the B-534, it possessed excellent handling characteristics for the era.

The Bk-534 was designed to carry one 20 mm (0.79 in) Oerlikon FFS-20 cannon firing through the nose, along with a pair of 7.92 mm (0.312 in) machine guns to the sides of the fuselage.
By the summer of 1938, Czechoslovakia, sensing rising political tension caused by German claims to Czechoslovak border territory, was eager to get more aircraft in the service, thus Avia decided to use a third machine gun in the nose.
However, there have been claims that the company had encountered substantial difficulties in adapting the aircraft to accommodate the additional weapon and these were not quickly resolved.
Judging by the size of the gun magazine, the nose machine gun was matched with an increased supply of ammunition.
Consequently however, the fuel load was decreased
The Avia B-534 was a single-seat unequal-span biplane fighter aircraft. The fuselage used a rectangular structure composed of steel tubes, which were attached together using a mixture of bolts and rivets and braced together using streamline wires. The wing, which had a riveted steel structure and fabric covering, was attached to the fuselage using N struts; similar struts were present in the outer section of the wings attaching the wings together. The forward section of the fuselage was covered with detachable metal panels, while the rear section had a fabric covering.
Production aircraft were exclusively powered by the Hispano-Suiza 12Y 12-cylinder water-cooled engine, rated to produce a maximum of 850 hp, which was built under license by Avia. The total fuel capacity was 70 gallons (320 litres); a combined cooler and oil tank was installed beneath the fuselage, while a water-based radiator was also set below the engine. Engine ignition was provided via the cockpit, along with automated fire-fighting equipment. Other cockpit equipment included a radio set, oxygen provision, and an adjustable seat and cockpit cover. Early-built aircraft featured an open cockpit, while later-built examples were furnished with an enclosed cockpit.
The B-534 was furnished with a monoplane tailplane, composed of steel and covered by fabric; similar construction methods were used for the fin and rudder. Both the rudder and the elevator were statically and aerodynamically balanced. The undercarriage was of a split-type configuration, being oleo-sprung and equipped with Dunlop-built wheels. The wheels, which were housed within streamlined fairings, were fitted with brakes; for conducting operations under winter conditions, skis could also be fitted to the undercarriage. According to reports from pilots who flew the B-534, it possessed excellent handling characteristics for the era.
The Bk-534 was designed to carry one 20 mm (0.79 in) Oerlikon FFS-20 cannon firing through the nose, along with a pair of 7.92 mm (0.312 in) machine guns to the sides of the fuselage. By the summer of 1938, Czechoslovakia, sensing rising political tension caused by German claims to Czechoslovak border territory, was eager to get more aircraft in the service, thus Avia decided to use a third machine gun in the nose. However, there have been claims that the company had encountered substantial difficulties in adapting the aircraft to accommodate the additional weapon and these were not quickly resolved. Judging by the size of the gun magazine, the nose machine gun was matched with an increased supply of ammunition. Consequently however, the fuel load was decreased
Avia B-534