User:NiD.29/Waco Standard Cabin series

The Waco Standard Cabin series is a range of American cabin biplanes produced by the Waco Aircraft Company in the 1930s.

Development
The standard cabin series were Waco's first successful cabin biplane design, and was based on the F series airframe. The Model C series had a raised centre and rear fuselage to form a four-seat cabin which was entered through a door over the lower wing and had a rather ugly framed rear-view window dispensed with in the later standard cabins. The initial QDC model of 1931 had a 165 hp Continental A70 cowled engine and was fitted with a triangulated shock-cord tailwheel undercarriage.

1932 brought the OEC and UEC models which were powered respectively by the 210 hp Kinner C5 and the 210 hp Continental R-670. Continuous refinement and improvement by Waco Aircraft resulted in production of various sub-models continuing until 1939.

In 1935, Waco introduced its Custom Cabin series (which featured a sesquiplane layout without ailerons on the lower wing) and decided to differentiate between the Standard and Custom Cabin types by appending an S to the model designator. in 1936 the C-S was replaced with an 'S' signifying 'Standard'.

Operational history
The Standard Cabin series, with its cabin comfort, proved to be popular with private pilot owners. Many were purchased by small commercial aviation firms and non-aviation businesses. Approximately 135 Standard Cabins series aircraft of several sub-models are currently registered in the USA.

Variants
Data from Aerofiles

DC Series (39 built)

 * BDC : 165 hp Wright R-540 engine.                No record of production.
 * ODC : 210 hp Kinner C-5 engine.                     modified to QDC.
 * PDC : 170 hp Jacobs LA-1 engine.                  2 built on special order.
 * QDC : 165 hp Continental A-70 engine.            37 built.
 * UDC : 210 hp Continental R-670 engine.           No record of production.

EC Series (43 built)

 * BEC : 165 hp Wright R-540 engine.                 1 built, [X12440], (converted to OEC or UEC).
 * OEC : 210 hp Kinner C-5 engine.                   3 built.
 * UEC : 210 hp Continental R-670 engine.           40 built.

IC Series

 * UIC : 210 hp Continental R-670 engine.           83 built.

JC Series

 * CJC : 250 hp Wright R-760 engine.                41 CJC, DJC & DJC-S built.
 * DJC : 285 hp Wright R-760 engine.

KC Series

 * UKC : 210 hp Continental R-670 engine.
 * YKC : 225 hp Jacobs L-4 engine.                  60 YKC built,

JC-S Series

 * CJC-S : 250 hp Wright R-760 engine.
 * DJC-S : 285 hp Wright R-760 engine.

KC-S Series

 * UKC-S : 210 hp Continental R-670 engine.         40 built.
 * YKC-S : 225 hp Jacobs L-4 engine.                22 YKC-S built
 * ZKC-S : 285 hp Jacobs L-5 engine.

KS Series

 * UKS-6 : 210 hp Continental R-670 engine. 2 built.
 * VKS-7F : Only Standard Cabin with flaps, built for Civilian Pilot Training Program.
 * YKS-6 : 225 hp Jacobs L-4 engine. 133 built.               65 YKS-6 built.
 * ZKS-6 & 7 : 285 hp Jacobs L-5 engine. 29 built. re-designated from ZKC-S in 1936.

Operators

 * Argentine Air Force (8 x VKS-7)
 * Argentine Air Force (8 x VKS-7)


 * Royal Australian Air Force (1 x YQC-6)
 * Royal Australian Air Force (1 x YQC-6)


 * Brazilian Air Force (32 x CJC)
 * Brazilian Air Force (32 x CJC)


 * 🇨🇦 Canada
 * Royal Canadian Air Force (1 x YKS-6)


 * Air Force of El Salvador (2 x UEC)
 * Air Force of El Salvador (2 x UEC)


 * Finnish Air Force (1 x ZQC-6)
 * Finnish Air Force (1 x ZQC-6)


 * Mexican Air Force (1 x UIC)
 * Mexican Air Force (1 x UIC)


 * Royal Netherlands Air Force (1 x UKC)
 * Royal Netherlands Air Force (1 x UKC)


 * Royal New Zealand Air Force - (1 x QDC, 1 x UIC)
 * Royal New Zealand Air Force - (1 x QDC, 1 x UIC)


 * Royal Norwegian Air Force (1 x YKS-7)
 * Royal Norwegian Air Force (1 x YKS-7)


 * South African Air Force (UEC, others)
 * South African Air Force (UEC, others)


 * Swedish Air Force (1 x UIC, 1 x UKC, 1)
 * Swedish Air Force (1 x UIC, 1 x UKC, 1)


 * Royal Air Force (1 x YKC)
 * Royal Air Force (1 x YKC)


 * United States Army Air Forces (2 x VKS-7 as UC-72D, 1 x YKS-7 as UC-72K & 2 ZKS-7 as UC-72M)
 * United States Navy (3x YKS-7 impressed - no USN designation used)
 * United States Navy (3x YKS-7 impressed - no USN designation used)