page_title: Waco Aircraft Company
section_title: Open cockpit biplanes and monoplanes
hierarchical_section_title: Waco Aircraft Company / Models / Open cockpit biplanes and monoplanes
caption_attribution_description: English: Waco PBA side-by-seating biplane NC12445 of 1932 at the Historic Aircraft Restoration Museum, Dauster Field, St Louis, MO
context_page_description: The Waco Aircraft Company was an aircraft manufacturer located in Troy, Ohio, United States. Between 1920 and 1947, the company produced a wide range of civilian biplanes.
  The company initially started under the name Weaver Aircraft Company of Ohio but changed its name to the Waco Aircraft Company in 1928/29.
context_section_description: Waco Cootie
  Single seat biplane/parasol monoplane, 1 produced, then re-built
  Waco models 4 through 7
  Used many Curtiss JN-4 parts with new interchangeable wing panels and powered by a 90 hp (67 kW) Curtiss OX-5.
  Waco 8
  First Waco cabin biplane, powered by 200 hp (149 kW) Liberty - 1 built
  Waco 9
  First mass-production model, steel-tube framing, powered by OX-5, equipped for EDO floats. Many re-engined. 270 built.
  Miss Pittsburgh
  Waco 10
  Most produced model of any Waco aircraft, 1,623 built between 1927 and 1933. Refinement of Waco 9 with 90 hp (67 kW) Curtiss OX-5 V8 engine. Redesignated GXE by Waco in 1928.
  Waco 240: 1 conversion of Waco 10 with 240 hp (179 kW) Continental W-670 radial engine.
  Waco ASO: Waco 10 variant with 220 hp (164 kW) Wright J-5 radial engine, known as J-5 Straightwing, Waco Sport, and Whirlwind Waco. 95 built.
  Waco BSO: Variant of ASO 165 hp (123 kW) Wright J-6-5 radial engine. 45 built.
  Waco CSO: Variant of ASO with 225 hp (168 kW) Wright J-6-7 radial engine. 59 built.
  Waco DSO: Variant of ASO with 180 hp (134 kW) Hispano-Suiza A/E V8 engine. 62 built.
  Waco HSO: Variant of ASO with 225 hp (168 kW) Packard DR-980 engine. 1 built.
  Waco ATO: Taperwing variant of ASO. 54 built.
  Waco CTO: Taperwing variant of CSO. 35 built.
  Waco HTO: Modified from HSO. 1 built.
  Waco JTO: 300 h.p. Wright J-6-9. 1 built.
  Waco JYO: U.S. Navy version of JTO for evaluation. 2 built.
  Waco Mailplanes
  Waco JWM: Straightwing mailplane with 330 hp (246 kW) Wright R-975 engine. Derivative of ASO with 14" fuselage stretch. 2 built.
  Waco JYM: Taperwing mailplane with 300 hp (224 kW) Wright J-6-9 radial engine. Derivative of ATO with 14" fuselage stretch. 4 built for Northwest Airways
  Waco A series
  Waco IBA: Improved KBA, side by side two seat biplane with optional canopy and 125 hp (93 kW) Kinner B-5 engine. 3 built.
  Waco KBA: 100 hp (75 kW) Kinner K-5 radial engine. 50 built.
  Waco PBA: IBA variant with 170 hp (127 kW) Jacobs LA-1 radial engine. 4 built.
  Waco RBA: IBA variant with 110 hp (82 kW) Warner Scarab radial engine. 4 built.
  Waco UBA: IBA variant with 210 hp (157 kW) Continental R-670 radial engine. 6 built.
  Waco PLA: Improved IBA, known as Waco Sportsman, with Jacobs LA-1 radial engine and greater range. 4 built.
  Waco ULA: PLA variant with 210 hp (157 kW) Continental R-670 radial engine. 1 built.
caption: Waco PBA side-by-side biplane of 1932
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