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Curtiss F11C Goshawk

For other uses of Goshawk, see Goshawk (disambiguation)
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F11C Goshawk

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First flight

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Primary user

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Number built

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The Curtiss F11C Goshawk was a 1930s United States naval biplane fighter aircraft that saw limited success but was part of a long line of Curtiss Hawk airplanes built by the Curtiss Aeroplane and Motor Company for the American military.

Design and development

In April 1932, when Curtiss was planning the Model 35B, the United States Navy contracted with the manufacturer for an improved derivative of the Model 34C, F6C as the F11C. It contained major changes that included the Script error: No such module "convert". Wright R-1510-98 radial engine, single-leg cantilever main landing-gear units, a slight increase in the interplane gap, metal- rather than fabric-covered control surfaces, and armament based on two Script error: No such module "convert". fixed forward-firing machine guns supplemented by a hardpoint under the fuselage for the carriage of a Script error: No such module "convert". bomb, or an auxiliary fuel tank. Curtiss designed the type as the Model 64 Goshawk, with the U.S. Navy designation XF11C-1 (later XBFC-1 after the adoption of the BF for Bomber-Fighter category). The aircraft was of fabric-covered metal construction, used the wing cell structure of the dismantled YP-23, and was delivered in September 1932.[1]

Shortly before ordering the XF11C-1, the Navy had bought a company-owned Model 64A demonstrator. This had a Wright R-1820-78 Cyclone engine, slightly longer main landing-gear legs carrying wheels with low-pressure tires, a tailwheel in place of the tailskid, fabric-covered control surfaces on the tail, and external provision for underwing racks for light bombs as well as an under-fuselage hardpoint for either a 50 gal (189 l) fuel tank or the crutch that would swing a bomb clear of the propeller disc before release in a dive-bombing attack.[1]

Flight trials of this XF11C-2 (later redesignated as the XBFC-2) revealed the need for a small number of minor changes. After making the changes, the XF11C-2 came to be regarded as the prototype for the F11C-2, of which 28 examples were ordered as dual-role fighter-bombers in October 1932.[1]

From March 1934, the aircraft were revised with a semi-enclosed cockpit and a number of other modifications before they received the revised designation BFC-2 in recognition of their fighter-bomber or, as the Navy would have it, bomber-fighter role[1] The last aircraft in the XF11C-2 contract was converted to the prototype XF11C-3, incorporating a more powerful R-1820-80 engine and a hand-operated retractable landing gear.[2]

File:F11C Goshawk.jpeg
XF11C-3 Goshawk in test flight

Operational history

The only U.S. Navy units to operate the F11C-2 were the Navy's famous "High Hat Squadron", VF-1B, aboard the carrier Saratoga, and VB-6 briefly assigned to Enterprise. In March 1934, when the aircraft were redesignated BFC-2, the "High Hat Squadron" was renumbered VB-2B, and then VB-3B, and retained its BFC-2s until February 1938. VB-6 never actually embarked on Enterprise with the BFC bombers.[3]

The F11C-2 Goshawk was produced in two export versions as the Hawk I and Hawk II fighters. Essentially a modified XF11C-2, the Hawk II was fitted with a Wright R-1820F-3 Cyclone rated at Script error: No such module "convert". at Script error: No such module "convert". and 356 liters of fuel while the Hawk I had 189 liters of internal fuel. Both versions carried the same armament as the production F11C-2. Only the Hawk II was exported in quantity with Turkey, the first customer taking delivery of 19 on August 30, 1932. Colombia placed an order at the end of October 1932, receiving an initial batch of four twin float-equipped Hawk IIs, the first of a total of 26 float fighters delivered by the end of July 1934. The Colombian Air Force used Hawk II and F11C-2 based in floats in the Colombia-Peru War in 1932-1933. Nine Hawk IIs were supplied to Bolivia, of which three had interchangeable wheel/float undercarriages; four were delivered to Chile, 52 to China,[4] four to Cuba, two to Germany, one to Norway and 12 to Thailand as Hawk IIIs.

Thai Hawk IIIs saw action during World War II, including against the Royal Air Force. On 8 April 1944 a Thai Hawk III was shot down by a No. 211 Squadron RAF Bristol Beaufighter over Lamphun, the pilot of the downed aircraft escaping by parachute.[5]


XF11C-1 (Model 64)
First prototype derived from the Curtis F6C Hawk.
XF11C-2 (Model 64A)
Second prototype, redesignated XBFC-2.
F11C-2 (Model 64A)
Production version, redesignated BFC-2; 28 built.
XF11C-3 (Model 67)
One F11C-2 fitted with retractable undercarriage and a Script error: No such module "convert". R-1820-80, later redesignated as XBF2C-1 fighter-bomber.
BFC-2 Hawk
Redesignation of F11C-2.


File:Hawk II F11C.jpg
Colombian Air Force Hawk II F11C,during the Güepí Campaign.
23x15px Bolivia
23x15px Chile
23x15px Republic of China
23x15px Colombia
23x15px Cuba
23x15px Germany
  • Two aircraft were bought by Germany for evaluation, including D-3165 tested as floatplane.
23x15px Norway
  • One aircraft purchased for evaluation purposes.
23x15px Thailand
23x15px Turkey
23x15px Peru
  • Three float-equipped aircraft purchased in March 1933. Four additional machines were brought in 1934.
23x15px United States


During the spring of 1933, Franz Muller who was a senior official in the Reich Air Ministry, informed Göring that he was approached by Udet to seek approval for the purchase of two Goshawks for dive bombing trials. Göring authorized the funds via the German Embassy in Washington DC. In October 1933 the pair of Goshawks arrived in Bremerhaven aboard the liner Europa.[6] Udet used one of these Goshawks (designated D-IRIK) in aerobatic exhibitions held during the 1936 Summer Olympics, the aircraft survived the war, was eventually found in a field outside Kraków,[7] and its relatively intact fuselage is now on display in the Polish Aviation Museum.

A BFC-2 is in the National Museum of Naval Aviation on NAS Pensacola, Florida, USA.

A Hawk III, the only one existing, has been restored by the Royal Thai Air Force Museum. The aircraft on display is painted with (Hanuman, white body) insignia identifying it as belonging to Wing 4. The Hawk III served in the RTAF between 1934–1949.[8]

Specifications (F11C-2) & (BFC-2)

Data from "The Complete Encyclopedia of World Aircraft" [9]

General characteristics



  1. ^ a b c d Eden and Moeng 2002
  2. ^ "Photograph - 'Photograph of F11C-3 Goshawk aircraft'." U.S. Navy Museum (Pensacola), 31 January 2000. Retrieved: 13 May 2009.
  3. ^ Swanborough and Bowers 1976
  4. ^ Gustavsson, Håkan. "Curtiss Hawks in the Chinese Air Force". Biplane Fighter Aces from the Second World War. Retrieved 30 January 2013. 
  5. ^ Thomas 2005, pp. 73-74
  6. ^ Hitler's Stuka Squadrons-The JU87 At War 1936-45 by John Ward
  7. ^ Hitler's Generals: Udet (TV aeries)
  8. ^ Trirat. "A Briefer History of the Royal Thai Air Force.", October 2007. Retrieved: 30 August 30, 2011.
  9. ^ Eden and Moeng 2002, p. 514.
  • Bellomo, Sergio; Cordon Aguirre, Arturo; Marino, Atilio; Núñez Padin, Jorge (1999). Núñez Padin, Jorge Felix, ed. Curtiss Hawk. Serie Fuerza Aérea Argentina (in Spanish) 5. Bahía Blanca, Argentina: Fuerzas Aeronavales. 
  • Eden, Paul and Soph Moeng. The Complete Encyclopedia of World Aircraft. London: Amber Books, 2002. ISBN 978-0-7607-3432-2.
  • Swanborough, Gordon and Peter M. Bowers. United States Military Aircraft Since 1911. Annapolis, Maryland: Naval Institute Press, 1976. ISBN 978-0-87021-968-9.
  • Thomas, Andrew (2005). Beaufighter Aces of World War 2. Oxford: Osprey Publishing. ISBN 978-1-84176-846-5. 

External links