The DAR 6 was designed by Zevtan Lazarov. It was constructed by the Bulgarian State Aircraft Workshops (DAR).

The aircraft was a conventional biplane with a fixed tailskid landing gear. It was powered by a radial engine.

Three versions were initially developed:

• Basic training version, powered by an 85 hp (63 kW) Walter Vega engine;
• Advanced training version, powered by a 145 hp (108 kW) Walter Mars I engine;
• 1937 Model DAR 6a. This variant offered faired struts and redesigned divided landing gear. It was powered by a 150 hp (112 kW) Walter Mars I engine.

  Bulgaria

• Bulgarian Air Force

Data from The Illustrated Encyclopedia of Aircraft, (Part Work 1982–1985), Orbis Publishing, Page 1295

General characteristics

• Crew: two, pilot and student
• Length: 6.85 m (22 ft 5.75 in)
• Wingspan: 9.05 m (29 ft 8.25 in)
• Height: 2.85 m (9 ft 4.25 in)
• Wing area: 19.30 m² (207.75 sq ft)
• Empty weight: 510 kg (1,124 lb)
• Gross weight: 770 kg (1,697 lb)
• Powerplant: 1 × Walter Mars I radial piston engine , 108 kW (145 hp)

Performance

• Maximum speed: 180 km/h (112 mph, 97 kn)
• Range: 715 km (444 mi, 386 nmi)

• Bernád, Dénes (July–August 2001). "Balkan Birds: Thirty-Five Years of Bulgarian Aircraft Production, Part One". Air Enthusiast (94): 18–30. ISSN 0143-5450.
• The Illustrated Encyclopedia of Aircraft, (Part Work 1982–1985), Orbis Publishing, Page 1295