Driggers D1-A

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Driggers D1-A
Driggers D1-A N891H EAA Msm OSH 07.06.06R edited-3.jpg
The sole Driggers D1-A exhibited at the EAA Museum at Oshkosh, Wisconsin, in 2006
Role light sporting monoplane
National origin United States
Manufacturer Willard A. Driggers
Designer Willard A. Driggers
Introduction 1929
Retired 1936
Status preserved
Primary user builder
Number built one

The Driggers D1-A is an American-built light high-wing single-seat sporting monoplane of the late 1920s.

Design and development[edit]

Willard A. Driggers of Washington, DC and Willow Grove, Pennsylvania designed and built the D1-A in 1929. It is a parasol high-wing monoplane with the aerofoil braced from the upper fuselage and lower fuselage. A fixed tailwheel undercarriage is fitted. The tailplane is set high on the rear fuselage and is braced. The rounded fin has a large rudder area. The 60 h.p. Lawrance L-4 engine is fitted within an elegant curved cowling with the cylinder heads protruding to allow air cooling. The D1-A has manufacturers number 1 and is registered N891H.[1] Driggers went on to design and build the two-seat Driggers D2-A in 1933.[2]

Operational history[edit]

The builder and owner flew the D1-A from 1929 until 1936, when it was damaged in a ground loop. It was named Sunshine Girl III. The aircraft was stored until 1968 when an Experimental Aircraft Association group rebuilt it for static exhibition.[3] It is currently displayed at the EAA museum at Oshkosh Wisconsin.[4]


Data from Aerofiles

General characteristics

  • Crew: 1
  • Length: 17 ft 8 in (5.38 m)
  • Wingspan: 22 ft 9 in (6.93 m)
  • Powerplant: 1 × Lawrance L-4 piston, 60 hp (45 kW)


  • Maximum speed: 95 mph (153 km/h; 83 kn)
  • Cruise speed: 85 mph (137 km/h; 74 kn)
  • Stall speed: 40 mph (64 km/h; 35 kn)
  • Range: 245 mi (213 nmi; 394 km)


  1. ^ Aerofiles
  2. ^ Aerofiles
  3. ^ Aerofiles
  4. ^ Ogden p. 559