page_title: Lawson L-4
section_title: Specifications (L-4)
hierarchical_section_title: Lawson L-4 / Specifications (L-4)
caption_attribution_description: English: Lawson L-4 3-view drawing from Les Ailes February 9,1922
context_page_description: The Lawson L-4 was the last in a series of Lawson biplane airliners designed and built by Alfred Lawson under the livery of the Lawson Airplane Company of Milwaukee, Wisconsin. The largest of the series, it was designed for long-distance flights. It was completed in 1920 but never flew, crashing on its initial takeoff.
context_section_description: General characteristics
  Length: 54 ft 2 in (16.51 m)
  Wingspan: 111 ft 5 in (33.96 m)
  Height: 17 ft 6 in (5.33 m)
  Wing area: 2,028 sq ft (188.4 m²)
  Empty weight: 9,759 lb (4,427 kg)
  Gross weight: 18,645 lb (8,457 kg)
  Powerplant: 3 × Liberty L-12 V-12 piston engine , 420 hp (313 kW)  each
  Performance
  Maximum speed: 110 mph (177 km/h, 96 kn) (estimated)
caption: Lawson L-4 3-view drawing from Les Ailes February 9, 1922
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