C-1 Trader

The Grumman OV-1 Mohawk is an armed military observation and attack aircraft that was designed for battlefield surveillance and light strike capabilities. It has a twin turboprop configuration, and carries two crew members in side-by-side seating. The Mohawk was intended to operate from short, unimproved runways in support of United States Army maneuver forces.

Grumman: C-1 Trader

Role Carrier onboard delivery
National origin United States
Manufacturer Grumman
First flight 19 January 1955
Introduction 1956
Retired 1988
Primary user United States Navy
Number built 87
Developed from Grumman S-2 Tracker
Developed into Grumman E-1 Tracer


C-1 Trader

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Grumman C-1 Trader

The Grumman C-1 Trader is a carrier onboard delivery (COD) variant of the Grumman S-2 Tracker. It was replaced by a similar version of the Northrop Grumman E-2 Hawkeye, the Grumman C-2 Greyhound.


The C-1 Trader grew out of a need by the United States Navy for a new anti-submarine airplane. In response to this Grumman began development on a prototype twin-engine, high-wing aircraft which it designated the G-89. In 1952 the Navy designated this aircraft the XS2F-1 and flew it for the first time on December 4 that year. During the rest of the 1950s three major variants emerged, the C-1 Trader being one of them. The C-1 (originally the TF-1) was outfitted to carry nine passengers or 3,500 pounds (1,600 kg) of cargo and first flew in January 1955.



Carrier Onboard Delivery version of the S-2 Tracker with enlarged fuselage for nine passengers, redesignated C-1A in 1962, 87 built.
Electronic Countermeasures conversion of the TF-1, redesignated EC-1A in 1962, four conversions.
Airborne Early Warning project that was developed in the WF-2 Tracer.
TF-1 redesignated in 1962.
TF-1Q redesignated in 1962.
KC-2 Turbo Trader
Marsh Aviation modernization project for Air-to-Air Refueling, requested for the Brazilian Navy.
proposed 10-12 seat passenger variant
proposed tanker variant

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Grumman C-1 Trader (1955)

In August 2010, Brazilian Naval Aviation announced that it will buy and modernize eight C-1 airframes to serve in carrier onboard delivery (COD) and aerial refueling roles for use on its aircraft carrier São Paulo.

In 2011 contract was signed with Marsh Aviation to convert four ex-US Navy C-1A Trader airframes into KC-2 Turbo Traders.[4] The first KC-2 prototype flight is expected for November 2017 and the delivery of the first operational aircraft is scheduled for December 2018


Crew: 1

Capacity: 9 pax / 8,500 lb (3,856 kg) payload

Length: 42 ft (13 m)

Wingspan: 69 ft 8 in (21.23 m)

Height: 16 ft 3.5 in (4.966 m)]

Empty weight: 16,631 lb (7,544 kg)

Gross weight: 23,031 lb (10,447 kg)

Max takeoff weight: 24,600 lb (11,158 kg)

Powerplant: 2 × Wright R-1820-82WA Cyclone 9-cylinder air-cooled radial piston engines, 1,525 hp (1,137 kW) each

Maximum speed: 280 mph (450 km/h, 240 kn) at 4,000 ft (1,219 m)

Cruise speed: 167 mph (269 km/h, 145 kn)

Range: 1,110 mi (1,790 km, 960 nmi)

Service ceiling: 24,800 ft (7,600 m)

Rate of climb: 1,950 ft/min (9.9 m/s)

Power/mass: 0.1315 hp/lb (0.2162 kW/kg)

Related development

Aircraft of comparable role, configuration, and era

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Seven U.S. Navy squadrons flew the F11F-1: VF-21 and VF-33 in the Atlantic Fleet and VA-156 (redesignated VF-111 in January 1959), VF-24 (redesignated VF-211 in March 1959), VF-51, VF-121, and VF-191 in the Pacific Fleet.

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