Waco ZKS-6
Waco began production of their C-series 4-seat cabin bi-planes in 1932 and continued building the popular aircraft in various versions up until 1942. The aircraft were popular corporate aircraft and could be considered the “Learjets” of their day. Beginning in 1935, the company restyled the C-series as the Standard or S-series and introduced a new Custom series. One of the features of the WACO company was a wide variety of choices available to the buyers. Multiple engine and airframe styles resulted in a bewildering assortment of models each with its own three letter designation. The first letter refers to the type of engine installed, the second is the reference letter of the set of plans used to build the aircraft, and the third letter is the model series. Numbers referred to the number of designs in the model series. Thus, the ZKS-6 is a Jacobs L-5 powered Standard cabin bi-plane of type K and is the sixth model in the series.

Wingspan33 ft 3 in.
Length25 ft 3 in.
Height8 ft 6 in.
Weight3,250 lbs (loaded)
Maximum Speed145 mph
Service Ceiling13,000 ft
Range200 miles
EnginesOne Jacobs L-5M radial with 285 horsepower
Crew4
ManufacturerWACO
MarkingsWACO factory paint scheme, 1936
DesignationZKS-6
RegistrationNC16523
Serial Number4512