page_title: Thomas-Morse S-4
section_title: Specifications (S-4C, late production)
hierarchical_section_title: Thomas-Morse S-4 / Specifications (S-4C, late production)
caption_attribution_description: English: Thomas-Morse S-4C American World War 1 single seat trainer drawing
context_page_description: The Thomas-Morse S-4 Scout was an American biplane advanced trainer, operated by the United States Army and the United States Navy. Dubbed the "Tommy" by pilots who flew it, the aircraft became the favorite single-seat training airplane produced in the U.S. during World War I. It had a long and varied career beginning with the S-4B, which first appeared in the summer of 1917.
context_section_description: Data from Aerofiles, United States Navy Aircraft since 1911,
  General characteristics
  Crew: 1
  Length: 19 ft 10 in (6.05 m)
  Wingspan: 26 ft 6 in (8.08 m)
  Height: 8 ft 1 in (2.46 m)
  Wing area: 234 sq ft (21.7 m²) 
  Empty weight: 963 lb (437 kg) 
  Gross weight: 1,330 lb (603 kg)
  Powerplant: 1 × Le Rhône 9C air-cooled rotary, 80 hp (60 kW)
  Performance
  Maximum speed: 97 mph (156 km/h, 84 kn)
  Endurance: 2 hr 30 min
  Service ceiling: 15,000 ft (4,600 m) 
  Armament
  Guns: Optional .30 caliber M1917/1918 Marlin-Rockwell machine gun
caption: Thomas-Morse S-4C drawing
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