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Waco F series / INF / KNF / MNF / RNF / PCF / PBF / QCF / UBF / UMF / UPF-7 / PT-14 / YMF / YPF / ZK-7 / ZPF / XJW-1 / QNF / CPF / DPF / EPF / VPF 
 
waco-inf
INF
 
The Waco 'F' series of biplanes supplanted and then replaced the earlier 'O' series of 1927/33. The 'F' series had an airframe which was smaller and about 450 pounds (200 kg) lighter than the 'O' series, while continuing to provide accommodation for three persons in tandem open cockpits. A similar performance to the earlier model was obtained on the power of smaller and more economical engines.
 
The initial models were the INF (125 hp / 93 kW Kinner engine) with around 50 built, KNF (100 hp / 75 kW Kinner, about 20 built) and the RNF (110 hp / 82 kW Warner Scarab, nearly 150 built), all of which had externally braced tailwheel undercarriages. Many further sub-models followed with more powerful engines of up to 225 hp / 168 kW. The most powerful in the range was the ZPF of 1936/37, intended for executive use.
 
Only four MNF's were built, i.e. NC11213, NC11222, NC11239 and NC11246.
 
 Waco-MNF
MNF
 
Al Menasco used the MNF to help promote his engines. A Heywood air-operated starter, caster action tail wheel, compass, navigation lights, first-aid kit and fire extinguisher were standard equipment on the MNF. NC11213 has the optional, Hamilton Standard ground adjustable prop. Brakes were optional.

 

The first QCF was finished on May 12, 1931. Thirty-one were built in 1932.
 
waco-qcf
QCF-2
 
The 'F' series was popular with private owner pilots for sporting and other uses and continued in production through the late 1930s. The tandem cockpit UPF-7 was adopted by the Civilian Pilot Training Program and continued in production until 1942 by which time over 600 had been built.
 
In 1937 Waco introduced its Model UPF-7 as an open-cockpit biplane with a 164-kW (220-hp) Continental W-670-K radial engine and seating for two or three. The type was intended for training and sport use. A single example was evaluated by the USAAC as a primary trainer during 1939 with the designation XPT-14. Then followed 13 YPT-14 service trials aircraft, which were later redesignated PT-14; a single civil Model UPF-7 was impressed with the designation PT-14A. However, another 600 aircraft of the same basic type were ordered with three engine types for the Civilian Pilot Training Program that undertook pilot training at educational institutions to provide a pool of trained pilots in the event of war. Another 31 similar aircraft were bought by the Civil Aeronautics Authority for its own flying unit.
 
Waco-UPF-7-02
Waco UPF-7 1941
 
The three place YPF-6 and YPF-7 OF 1935 (ATC 586) featured a sliding canopy and unit price of $8,395. Five were built as YPF-6 (NC15700, NC15606, NC15711, NC16579, NC17470) and three re-designated in 1937 as YPF-7 (NC17710, NC17715, NC20907).
 
Waco-YPF-01
Waco YPF-6 NC16579

Waco-YPF-02
Waco YPF-7

 

Approximately 600 came out of the Troy, Ohio factory between 1937 and 1942.
 
The WACO Aircraft Company of Ohio Inc had built three replicas by December 2011, which they designated MF.
 
The Guatemalan Air Force received at least 1 Waco YMF-7 in 1934, which was still in airworthy condition in 1998.
 
The United States Army Air Corps adopted the UPF-7 as the PT-14, with one XPT-14 and 13 YPT-14s being purchased, with an additional UPF-7 impressed in 1942 as a PT-14A. Some were operated by the United States Navy.
 
waco-pt14
PT-14
 
Waco-CPF-01
Waco CPF of Brazilian navy

 

Considerable numbers of 'F' series biplanes, both original and newly built, remained in service in mid-2009.
 
 
Variants:
 
CPF
1935 (ATC 583)
Engine: Wright R-760, 250hp (186 kW)
Wingspan: 30'0"
Length: 23'2"
Usefull load: 925 lb
Max speed: 150 mph
Cruise speed: 135 mph
Stall: 48 mph
Range: 400 mi
Price: $8,775.
Seats: 2-3
redesignated DPF
 
CPF-6
Engine: Wright Cyclone, 250hp
Useful load: 965 lb
Price: $8,000
redesignated DPF

 

DPF-6 / Waco DPF-7
Engine: Wright R-760, 285 hp (213 kW)
Was CPF
 
EPF-6
Engine: Wright R-760, 320 hp (239 kW)
1 built.
 
INF
Certified ATC#345 2 August 1930
Engine: Kinner B-5, 125 hp (93 kW)
Span: 29 ft 7 in (9.1 m)
Length: 20 ft 10 in (7 m)
Height: 8 ft 5 in (2.5 m)
Wing area: 244 sq ft (22.7 sq m)
Empty weight: 1870 lb (848 kg)
Loaded weight: 2650 lb (1202 kg)
Maximum speed: 128 mph (206 km/h)
Cruise speed: 96 mph
Stall: 40 mph
Range: 370 mi
Seats: 3
Price: $4,110
50 built
 
KNF
Certified ATC#313 12 April 1930
Engine: Kinner K-5, 100 hp (75 kW)
20 built
 
MNF
Engine: Menasco C-4 Pirate, 125 hp / 93 kW
Wing span: nearly 30'
Gross weight: 1900 lb
Cruise: 100 mph
Stall: 35 mph
4 built
 
QNF
Engine: Continental A-70, 165 hp / 123 kW
1 built

 

RNF
Certified ATC#311 7 April 1930
Engine: Warner Scarab, 110 hp (82 kW)
177 built
 
Waco-RNF-01
1931 RNF
 
PBF
Engine: Jacobs LA-1, 170 hp (127 kW)
as PCF with modified 'B' wings
4 built
 
PCF
Engine: Jacobs LA-1, 170 hp (127 kW)
3 built
 
PCF-2
Certified ATC#473 2 October 1931
Engine: Jacobs LA-1, 170 hp (127 kW)
new cross-braced undercarriage
 
QCF
QCF-2 Certified ATC#416 9 April 1931
Engine: Continental A70, 165 hp (123 kW)
Cruise: 108mph
31 built
 
UBF / UBF-2 / XJW-1
Engine: Continental R-670, 210 hp (157 kW)
Cruise: 120 mph
Two UBF designated XJW-1 were used by the US Navy as hook-up trainers for the Curtiss F9C Sparrowhawk airship-borne fighters.
Around 11 built
 
Waco-UBF-01
1932 UBF
 
UMF / UMF-3 / UMF-5
Engine: Continental R-670A, 210 hp (157 kW)
longer wider fuselage and larger vertical fin
18 built
 
YMF
18 built -3 & -5
as UMF
 
YMF-3
Engine: Jacobs L-4, 225 hp (168 kW)
 
YMF-5
Engine: Jacobs L-4, 245 hp (183 kW)
 
YPF-6 / YPF-7
Engine: Jacobs L-4, 225 hp (168 kW)
Wingspan: 30'0"
Length: 23'4"
Useful load: 975 lb
Max speed: 150 mph
Cruise speed: 135 mph
Stall: 50 mph
Range: 405 mi

8 built

 

Waco-YPF
YPF
 
ZPF-6 / ZPF-7
Engine: Jacobs L-5, 285 hp (213 kW)
5 built
 
Waco-ZPF6
1936 ZPF-6
 
UPF-6
Engine: Continental R-670, 210 hp (157 kW)
Prototype for UPF-7
 
UPF-7 / PT-14
tandem training version with wider-track undercarriage (USAAC)
Engine: l x Continental R-670-3 or W-670-6A, 164kW (220 hp)
Wingspan: 30 ft 0 in (9.14 m)
Wing area: 244 ft2 (22.67 m2)
Length: 23 ft 1 in (7.04 m)
Height: 8 ft 5 in (2.57 m)
Max TO weight: 2,650 lb (1202.02 kg)
Empty weight: 1,870 lb (848.22 kg)
Maximum speed: 128 mph (207 km/h)
Cruise speed: 114 mph (185 km/h)
Range: 400 miles (644 km)
Service ceiling: 14,800 ft (4,511 m)
Armament: none
Crew: 1
Capacity: 1 trainee or passenger
14 became YPT-14 trainers
over 600 built
 
VPF-6 / Waco VPF-7
Engine: Continental W-670, 240 hp (179 kW)
6 built.
 
 
 
 
 
 
 
 


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