Two mailplane derivatives from the O series (types JYM and JWM) were single seaters with a 14″ stretch in the fuselage.
The JWM was a straightwing derivative of which two were built, including NX8550.
The JYM (ATC 2-361) was a taperwing derivative of which four were built, NR42M, NR631N, NC731K, NC991, for Northwest Airways in 1929.
JYM
Engine: 1 x Wright R975 / J-6-9, 330 hp (224 kW)
Seats: 1
JWM
Engine: 330 hp (246 kW) Wright R-975
Designed by Charles Meyers, the Waco 10 was a larger span development of the Waco 9, both single-engined three-seat single-bay biplanes constructed around steel-tube frames. The wing covering was fabric, and both upper and lower planes carried ailerons, which were strut linked. The two passengers sat side by side in a cockpit under the upper wing and ahead of the pilot, who had a separate cockpit. It had a split-axle fixed undercarriage and a tailwheel. The main undercarriage was fitted with hydraulic shock absorbers, unusual at the time on a light aircraft. The fin could be trimmed on the ground to offset engine torque, and the tailplane could be trimmed in flight. Initially it was powered by a Curtiss OX-5 water-cooled 90° V-8 engine producing 90 hp (67 kW).
Its first flight was in 1927. The improved WACO Model 10 replaced the Nine in 1927, featuring a larger wing area, bigger cockpit, an adjustable stabilizer, and the first shock absorber landing gear built into a small aircraft. The WACO 10’s performance was markedly enhanced and the aircraft was sold with several different engine options (OX-5, OXX-6, Hispano-Suiza and Wright J-5 Whirlwind).
Noted for quick and straightforward takeoffs, a speedy rate of climb and equally tolerable landing speeds, the WACO 10’s performance soon made it the most popular small aircraft in the United States. By 1927, more than 40 percent of small aircraft sold in the country were WACOs, including 350 WACO 10s at a sticker price of $2,460 (with the OX-5 engine). The WACO 10’s reputation extended to the air race circuit as well: an OX-5 engine-powered model won the 1927 New York to Spokane, Washington, transcontinental Air Derby (Class B) and a Wright J-5-powered WACO 10 won the National Air Tour the following year.
Advance Aircraft went on to manufacture the notable WACO Taperwing in 1928 and then, in 1929, the company officially renamed itself the WACO Aircraft Corporation to correspond with its line of aircraft.
A Taperwing was flown to victory in the 1928 National Air Derby by Johnny Livingston a well known aviator, WACO dealer, airline operator and daring air-racer of the day.
In 1928, after the Waco 10 had entered production, Waco changed its designation system so that the basic model 10, powered by a 90 hp (67 kW) Curtiss OX-5 engine became the GXE. The OX-5 was also used in the Waco 9, and this led to the confusing popular description of both aircraft as Waco 90, after the power.
Other engines were fitted experimentally, without unique designations, including Rausie, Siemans, and the 115 hp (86 kW) Milwaukee Tank engine (ATC 2-363) in 1931. This was an air-cooled version of the Curtiss OX-5, and was intended as an aircraft engine.
Later aircraft used a three-letter designation, the first denoting the engine, the second, S or T meaning Straight or Tapered wing and the final O indicating it belongs to the Waco O series for open cockpit. An -A suffix indicated an armed variant intended for export.
The Waco 10 turned out to have excellent handling, and there was a ready supply of war-surplus Curtiss engines. It was widely used for the popularisation of aeronautics through barnstorming and joyrides, and was also much used as a trainer and by small operators for charter flights.
The 1931 240-A was a single place armed export version of the CSO with a 240hp Continental W-670. Possibly only one was built.
It was numerically the most important type to be built by Waco (ATC 13), with at least 1,623 built over a period of 7 years from 1927 to 1933 and was fitted with a very large variety of engines of radial and V configuration. The unit cost was $2,145 minus engine & prop. The total price was $2,460, $2,385 in 1928, and $3,145 in 1929.
The Advance ASO or 10-W, and 220-T of 1927 (ATC 41) was also popularly known as “J-5 Straightwing,” “Waco Sport,” or “Whirlwind Waco.” ATC 2-101 covered weight changes and ATC 2-102) for EDO floats.
The ATO aka 10-T Taperwing of 1928 (ATC 123) was designed by Charlie Meyers and first flew on 30 April 1929. The price was $8,325 and 54 were built. Sometimes popularly referred to as “Waco 220” for its horsepower.
The BSO (or BS-165) of 1929 operated under ATC 168 (and 2-262 for EDO twin-float modification) and about 45 were built, at $6,370.
Twenty-nine CSO / CS-225 was built in 1929 for $7,335 under ATC 240. Thirty military exports as CSO-A and 240-A were built in 1932.
The 1929 CTO (or 225-TW) (ATC 257) was a taperwing CSO. Thirteen were built plus 22 military versions as CTO-A in 1932. ATC 2-378 was for two single place models with 240hp Wright R-760 engines and raked top wing with I-struts; NC21M and NC666N.
The Waco DSO / 10-H (ATC 42) of 1928 sold for $3,935 with the 150 hp Hisso A ($4,085 with Hisso E) and 62 were built. 2-ATC 245 was for the EDO float conversion.
The 1930 HSO (ATC 333) was designed by A Francis Arcier (principal Waco designer from 1930-47). The one built, NX/NC4N, was priced at $7,500 and later modified as taperwing HTO NR4N.
The 1929 three-place JTO was powered by a 300hp Wright J-6. The one built, N13918, was refitted with a 365hp Wright R-975 in 1932 but only test-flown.
The 1933 JYO were two USN version of the JTO for evaluation.
One Waco KSO was built, NX795E, in 1929. Possibly a modified GXE with a 100hp Kinner K-5.
One Waco PSO (ATC 339) was built, NC699N, in 1930, priced at $5,175.
One WACO QSO (ATC 337) was built in 1930, NC837V, priced at $5,575.
One Waco RSO was built, in 1929, NC9531.
ATO Scale replica:
Williams WACO RTO
WACO Aircraft Company ATO
Variation:
Klatt Screamin’ Sasquatch / Jet Waco
Specifications:
Advance 10
Engine: OXX-6
Advance 10
Engine: Hisso A/E
Advance 10
Engine: Rausie
Advance 10
Engine: Siemens
Advance 10
Engine: Wrights J-4/J-5
Advance 10
Engine: 115hp Milwaukee Tank
10 / GXE / 90
Engine: 1 x Curtiss OX-5, 90 hp / 67 kW
Wingspan: 30 ft 7 in (9.32 m)
Airfoil: Aeromarine 2A
Length: 23 ft 6 in (7.16 m)
Height: 9 ft 0 in (2.74 m)
Empty weight: 1199 lb (545 kg)
Loaded weight: 2025 lb (920 kg)
Payload: 825 pounds (including pilot, fuel and oil) (374 kg)
Maximum speed: 97 mph (156 km/h)
Cruise speed: 84 mph (135 km/h)
Stall speed: 37 mph (60 km/h)
Range: 380 miles (610 km)
Rate of climb: 500 ft/min (2.54 m/s)
Crew: one
Capacity: two passengers
10-W / ASO / 220-T / J-5 Straightwing / Waco Sport / Whirlwind Waco
Waco 10 variant
Engine: 1 x Wright J-5, 220 hp / 164 kW
Wingspan: 30’7″
Length: 22’6″
Useful load: 900 lb
Max speed: 126 mph
Cruide speed: 108 mph
Stall: 40 mph
Range: 525 mi
Price 1927: $7,215
Price 1929: $7,335
Seats: 3
95 built
ATO
Taperwing variant of ASO
Engine: 1 x Wright J5-9, 220 hp / 164 kW
Wing span: 30 ft 3 in
Length: 22’6″
Useful load: 813 lb
Max speed: 130 mph
Cruise speed: 110 mph
Stall: 52 mph
Range: 700 mi
Seats: 3
54 built
BSO
Variant of ASO
45 built
BSO / BS-165
Engine: 1 x Wright R-540A, 165 hp / 123 kW
Wingspan: 30’7″
Length: 23’6″
Useful load: 956 lb
Max speed: 120 mph
Cruise speed: 100 mph
Stall: 44 mph
Range: 600 mi
Seats: 3
BSO-A
Engine: 1 x Wright R-540A, 165 hp / 123 kW
Wingspan: 30’7″
Length: 23’6″
CSO / C-225
Engine: 1 x Wright R-760 / J-6-7, 225 hp / 168 kW
Wingspan: 30’7″
Length: 22’6″
Useful load: 972 lb
Max speed: 128 mph
Cruise speed: 108 mph
Stall: 45 mph
Range: 540 mi
Seats: 3
59 built
240-A
Engine: 240hp Continental W-670
Seats: 1
Armament: 2 x .30 Browning
CTO
Engine: 1 x Wright J6-7 / R-760, 225 hp / 168 kW
Max speed: 144 mph
Cruise speed: 121 mph
Seats: 3
Taperwing variant of CSO
35 built
CTO
ATC 267
Engine: Wright J-6, 250 hp
Top speed: 138 mph
Cruise speed: 118 mph
Landing speed: 57 mph
Landing run: 360 ft
ROC: 1100 fpm
Service ceiling: 17,000 ft
Fuel consumption: 12 USG/hr
Fuel capacity: 66 USG
Oil capacity: 8 USG
Length: 22 ft 5 in
Height: 9 ft
Wing span: 30 ft 5 in
Empty weight: 1677 lb
MTOW: 2600 lb
Std price: $8525
Number sold: 51
Seats: 3
DSO
Engine: Hisso A, 150 hp
Wingspan: 30’7″
Length: 23’6″
Useful load: 896 lb
Max speed: 115 mph
Cruise speed: 100 mph
Stall: 44 mph
Range: 375 mi
Seats: 3
DSO
Engine: Hisso E, 180 hp
Wingspan: 30’7″
Length: 23’6″
Seats: 3
10-H / DSO
Engine: 1 x Hispano-Suiza 8A, 150 hp / 112 kW
10-H / DSO
Engine: 1 x Hispano-Suiza 8E, 180 hp / 134 kW
HSO
Engine: 1 x Packard DR-980 Diesel, 225 hp / 168 kW
Wingspan: 30’7″
Length: 22’4″
Useful load: 786 lb
Max speed: 128 mph
Cruise speed: 108 mph
Stall: 45 mph
Range: 490-585 mi
Seats: 3
HTO
Engine: 1 x Packard DR-980 Diesel, 225 hp / 168 kW
Modified from HSO
Wingspan: 30’7″
Length: 22’4″
Useful load: 786 lb
Max speed: 128 mph
Cruise speed: 108 mph
Stall: 45 mph
Range: 490-585 mi
Seats: 3
1 built
JTO
Engine: 1 x Wright R-975 / J-6-9, 300 hp / 225 kW
1 built
JYO
Engine: 1 x Wright R-975, 300 hp / 225 kW
U.S. Navy version of JTO for evaluation. 2 built
KSO
Engine: 1 x Kinner K-5, 100 hp / 75 kw
OSO
Engine: 1 x Kinner C-5, 210 hp / 157 kW
PSO
Engine: 1 x Jacobs LA-1, 140/170 hp / 125/140 kW
Wingspan: 30’7″
Length: 23’6″
Useful load: 933 lb
Max speed: 115 mph
Cruise speed: 97 mph
Stall: 42 mph
Range: 650 mi
Seats: 3
QSO
Engine: 1 x Continental A-70, 165 hp / 123 kW
Wingspan: 30’7″
Length: 23’6″
Useful load: 1001 lb
Max speed: 120 mph
Cruise speed: 100 mph
Stall: 45 mph
Range: 575 mi
Seats: 3
RSO
Engine: 1 x Warner Scarab, 110 hp / 82 kW
Seats: 3
240-A
Engine: 1 x Continental W-670, 240 hp / 179 kW
1 conversion of Waco 10
Manufactured from 1936, sixty-eight AQC-6 (ATC 598) were built.
The ZQC-6 model (285 hp Jacobs L-5MB engine) could be converted to an AQC-6 (330 hp Jacobs L-6MB).
At least two AQC-6 Freighter aircraft and eight ZQC-6 Freighter aircraft were ordered through Fleet Aircraft and built for use in Canada with additional freight doors on both sides of the fuselage and equipped for floats. Additional aircraft may have been modified. CF-BDW appears as EGC-7 in some regs.
Twenty EQC-6 were built in 1936 (ATC 597) for $9,650. The USCG used three EQC-6 bought from Waco as J2W-1 (V157, V157, and V159). One ZQC-6 was impressed by the USAAF as UC-72Q and five as UC-72H in 1942. Additional aircraft impressed by the US Navy were undesignated.
US Army Air Forces designation for impressed Custom Cabin series Wacos.
UC-72Q – one impressed ZQC-6
UC-72G – one impressed AQC-6 (NC20906)
UC-72H – five impressed ZQC-6
The Swedish Air Force designation for ZQC-6 was Tp-8a and Tp-8 was a generic designation for all Wacos.
The Royal Australian Air Force impressed a YQC-6 serialled A-54. It was re-engined with a 200 hp (149 kW) De Havilland Gypsy 6 inline engine in 1946 (VH-UVW).
The Argentine Navy operated EQC-6 and UOC. The Royal Canadian Air Force impressed AQC-6. The Canadian Department of National Defence purchased two ZQC-6. The Finnish Air Force impressed ZQC-6.
The DQC-6 of 1936 (ATC 597) seated 4-5 and sold for $8,975. Eleven were built: NC2277, NC15706, NC15714, NC15722, NC16214, NC16218, NC16515, NC16520, NC16525, NC16591, and NC16595.
Three USCG version of the EQC-6, on twin floats for operation from a cutter, and EGC-7 on wheels, were built in 1937 as J2W-1; V157, V158, and V159.
One 1937 VQC-6 (ATC 631) was built (NC16243), reportedly first registered as UQC-6, but unconfirmed by factory records.
AQC-6 / UC-72G
Engine: Jacobs L-6MB, 330 hp (246 kW)
Max Speed: 170 mph (274 km/h)
Cruising Speed: 155 mph (249 km/h)
Service Ceiling: 18,500 ft (5,638 m)
Range: 550 mi (885 km)
Empty weight: 2,313 lb (1,049 kg)
Loaded weight: 3,650 lb (1,656 kg)
Span: 35 ft (10.7 m)
Length: 26 ft 8 in (8.1 m)
Height: 8 ft 8 in (2.6 m)
Wing Area: 244 sq ft (22.7 sq m)
7 built
DQC-6
Engine: Wright R-760-E1, 285 hp (213 kW)
Wingspan: 35’0″
Length: 26’2″
Useful load: 1425 lb
Max speed: 170 mph
Cruise speed: 151 mph
Stall: 55 mph
Range: 580 mi
Seats: 4-5
11 built
EQC-6 / J2W-1
Engine: Wright R-760-E2, 320 hp (239 kW)
Wingspan: 35’0″
Length: 26’2″
Useful load: 1406 lb
Max speed: 176 mph
Cruise speed: 157 mph
Stall: 55 mph
Range: 550 mi
Seats: 4-5
UQC-6
Seats: 4
VQC-6
Engine: Continental W-670-M1, 250 hp (186 kW)
Wingspan: 35’0″
Length: 26’8″
Useful load: 1470 lb
Max speed: 160 mph
Cruise speed: 150 mph
Stall: 55 mph
Range: 600 mi
Seats: 4-5
One built.
YQC-6
Engine: Jacobs L-4, 225 hp (168 kW)
Wingspan: 35’0″
Length: 26’2″
Useful load: 2050 lb
Max speed: 159 mph
Cruise speed: 140 mph
Stall: 52 mph
Range: 650 mi
13 built.
Unit cost: $7,295
Seats: 4
ZQC-6 / UC-72Q / UC-72H / Tp-8a
Engine: Jacobs L-5MB, 285 hp (213 kW)
Propellers: 2-bladed
Upper wingspan: 35 ft 0 in (10.67 m)
Lower wingspan: 24 ft 6 in (7.47 m)
Wing area: 244 sq ft (22.7 m2) total
Length: 26 ft 8 in (8.13 m)
Height: 8 ft 8 in (2.64 m)
Empty weight: 2,023 lb (918 kg)
Gross weight: 3,500 lb (1,588 kg)
Maximum speed: 166 mph (267 km/h; 144 kn)
Cruise speed: 150 mph (130 kn; 241 km/h)
Service ceiling: 17,000 ft (5,182 m)
Crew: one
Capacity: four passengers
68 built
Following Buck Weaver’s death in 1924, Clayt Bruckner and Sam Junkin reorganized the business and soon introduced the company’s popular Model 9 (or Nine) in 1925. Powered by a Curtiss OX-5 or Wright Hispano engine, the WACO Nine delivered better performance than the readily available war surplus Curtiss Jennys at an affordable price.
The design of the 1925 Waco 9 (ATC 11) was state-of-the-art for its time—a fabric-covered wooden wing structure strengthened with welded steel tubing. The front cockpit was equipped with a bench seat that accommodated two passengers with a single cockpit for the pilot in the rear of the aircraft. An engine radiator mounted under the forward edge of the upper wing became a distinguishing WACO trait.
First mass-production model was the three-seat Model 9, steel-tube framing, powered by OX-5, equipped for EDO floats. The first aircraft to be fitted with aluminum floats, by EDO Corp in 1928.
The design of the Nine was state-of-the-art for its time—a fabric-covered wooden wing structure strengthened with welded steel tubing. The front cockpit was equipped with a bench seat that accommodated two passengers with a single cockpit for the pilot in the rear of the aircraft. An engine radiator mounted under the forward edge of the upper wing became a distinguishing WACO trait.
The stylish WACO Nine made a good showing during the 1925 Ford Air Tour. The accompanying publicity quickly translated into increased aircraft sales and 276 Nines were sold between 1925 and 1927 for $2,025-2,500.
An outstanding barnstormer, more than 14 Nines competed in the 1926 National Air Races with several finishing first in their events. WACO Nines also saw duty as crop-dusters—the airplane could be outfitted with floats for water landing—and were also used as an early commuter aircraft.
Mainly poweed with a 90hp Curtiss OX-5, they were also supplied with 100hp Curtiss OXX-6, 100hp Curtiss C-6 or 150hp Hisso A.
Advance 9
Engine: 90hp Curtiss OX-5
Wingspan: 29’6″
Length: 23’4″
Useful load: 780 lb
Max speed: 92 mph
Cruise speed: 79 mph
Stall: 32 mph
Range: 375-400 miles
Seats: 3
In 1924, the first cabin WACO aircraft was manufactured, the six-passenger WACO 8, featuring an open cockpit positioned behind the cabin for the pilot and co-pilot, powered by 200 hp (149 kW) Liberty.
A preliminary first flight was made in late Aug 1924, piloted by Clayton Brukner, and an official first flight was made on 21 October 1924, piloted by Tex LaGrone.
Only one WACO 8 was ever sold for $4,500 to an aerial photo company in Kansas City and it was eventually used to aerially map the Ozarks. It was eventually destroyed in a landing accident.
One other Waco 8 was uncompleted.
Engine: 200hp Liberty 6
Wingspan: 40’0″
Length: 32’0″
Usefulload: 1473 lb
Max speed: 90 mph
Cruise speed: 80 mph
Stall: 37 mph
Seats: 8
The Waco team continued to assemble airplanes from parts salvaged from surplus World War I Curtiss Jennys, continuously tinkering with their designs and making improvements.
Similar to the Waco 6, the 1924 Waco 7 used many Curtiss JN-4 parts with new interchangeable wing panels and powered by a 90 hp (67 kW) Curtiss OX-5.
The three-passenger WACO 7 was modestly successful with 16 aircraft sold at $2,500.
Engine: 90 hp (67 kW) Curtiss OX-5
Max speed: 90 mph
Stall: 30 mph
The Waco team continued to assemble airplanes from parts salvaged from surplus World War I Curtiss Jennys, continuously tinkering with their designs and making improvements.
Used many Curtiss JN-4 parts with new interchangeable wing panels and powered by a 90 hp (67 kW) Curtiss OX-5.
The first Troy-built model, the WACO 6, was soon being marketed and four were built
Engine: 90hp Curtiss OX-5
Wingspan: 30’0″
Length: 24’0″
Useful load: 750 lb
Max speed: 88 mph
Stall: 32 mph
Seats: 3
The Waco team continued to assemble airplanes from parts salvaged from surplus World War I Curtiss Jennys, continuously tinkering with their designs and making improvements.
The 1921 Weaver 5 three place open cockpit biplane used many Curtiss JN-4 parts with new interchangeable wing panels and powered by a 90 hp (67 kW) Curtiss OX-5.
Eventually, they sold two WACO 5 biplanes, conversions of JN-4C Canucks, two with 150hp Hisso A engines. Selling for $1,500-2,000, the final one was built at Advance Co in 1923.
Engine: 90h Curtiss OX-5
Wingspan: 37’0″ / 33’0″
Length: 25’3″ / 23’0″
Useul load: 750 lb
Max speed: 80 mph
Stall: 30 mph
Seats: 3
The WACO partners persevered, designing a practical three-seat biplane, the WACO 4, and building it out of parts left over from the Cootie and other biplane efforts. The team continued to assemble airplanes from parts salvaged from surplus World War I Curtiss Jennys, continuously tinkering with their designs and making improvements.
The 1921 Weaver 4 used many Curtiss JN-4 parts with new interchangeable wing panels and powered by a 90 hp (67 kW) Curtiss OX-5.
Selling for $4,000, the model 4 was the company’s first public sale and the last of the all-wood Wacos.
One appearing in early registers as Waco 4 (NABCW) was actually a modified Hisso-Curtiss JN-4 Canuck with Brukner “high-lift” wings.
Engine: 90hp Curtiss OX-5
Wingspan: 28’0″
Length: 23’0″
Useful load: 890 lb
Max speed: 84 mph
Stall: 33 mph
Seats: 3-4
The Weaver 2 Cootie Biplane of 1920 was a single place open cockpit biplane rebuild of the Cootie #1 with a larger tail area and a beefed-up landing gear.
First flown on 14 June 1920, piloted by G Weaver, it eventually crashed in April 1923 having cost $1,500.
A 30hp hydroplane version was begun, but never completed because of funding problems.
Empty weight: approx 340 lb
Speed: 62 mph
All Aero 