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Fighter / Attack:
   Bell P-39 Airacobra
   Bell P-63 Kingcobra
   Brewster Buffalo
   Chance-Vought F-4U Corsair
   Curtiss P-40 Warhawk
   Curtiss SB2C Helldiver
   Douglas A-1 Skyraider
   Douglas A-26 Invader
   Douglas SBD Dauntless
   Fairey Firefly
   Focke-Wulf Fw 190
   Grumman F4F Wildcat
   Grumman F6F Hellcat
   Grumman F7F Tigercat
   Grumman F8F Bearcat
   Grumman TBF Avenger
   Hawker Hurricane
   Hawker Sea Fury
   Lockheed P-38 Lightning
   Messerschmitt Bf-109
   Mitsubishi A6M Zero-Sen
   North American P-51 Mustang

   Polikarpov I-16
   Republic P-47 Thunderbolt
   Supermarine Spitfire
   Yakovlev Yak-3
   Yakovlev Yak-9

Beechcraft AT-11 Kansan (C-45)
   Beechcraft T-34 Mentor
   Boeing / Stearman PT-17

   Commonwealth CA-25 Winjeel
   Commonwealth CA-1 Wirraway
   DeHavilland DHC-1 Chipmunk
   DeHavilland DH-82 Tiger Moth
   Fairchild PT-19 Cornell
   Hunting / Percival Provost
   Meyers OTW
   Nanchang CJ-6
   Naval Aircraft Factory N3N
   N. Am. BT-9 / BT-14 / Yale
   N. Am. T-6 Texan / SNJ / Harvard
   N. American T-28 Trojan

   Piaggio P149
   Ryan PT-22 Recruit

   Scottish Aviation T1 Bulldog
   Vultee BT-13 Valiant
   Yakovlev Yak-11
   Yakovlev Yak-18
   Yakovlev Yak-52

   Avro Lancaster
   Boeing B-17 Flying Fortress
   Boeing B-29 Superfortress
   Bristol Blenheim / Bolingbroke
   Consolidated B-24 Liberator
   Consolidated PB4Y-2 Privateer

   Douglas A-3 Skywarrior
   DeHavilland Mosquito
   Fairey Swordfish
   Heinkel He-111 / Casa 2.111

   Lockheed PV-2 Harpoon / Ventura
   Martin B-26 Marauder
   North American B-25 Mitchell

   Beechcraft C-45 (AT-11)

   Boeing C-97 Stratofreighter (KC-97)
   Curtiss C-46 Commando
   Douglas C-47 Skytrain / Dakota
   Douglas C-54 Skymaster

   Fairchild C-119 Flying Boxcar
   Fairchild C-123 Provider
   Grumman C-1 Trader (S-2)
   Lockheed C-60 Lodestar
   Lockheed C-69 Constellation

Utility / Observation / Special Duty:
   Aeronca L-3 Grasshopper
   Aeronca L-16 Grasshopper
   Antonov AN-2 Colt
   Auster AOP 6/9
   Avro 652 Anson
   Avro Shackleton
   British Taylorcraft I-V
   Cessna L-19 / O-1 Bird Dog
   Cessna O-2 Super Skymaster
   Cessna T-50 / UC-78 Bobcat
   Consolidated PBY Catalina

   DeHavilland U-6A / L-20 Beaver
   Fairey Gannet
   Fairey Swordfish
   Fieseler Fi156 Storch
   Grumman S-2 Tracker (C-1)
   Grumman HU-16 Albatross
   Grumman OV-1 Mohawk
   Junkers Ju 52/3m

   Lockheed P2V Neptune
   Max Holste M.H.1521 Broussard
   Messerschmitt Bf 108 Taifun

   Noorduyn UC-64 Norseman
   North American L-17 Navion
   N. Am./ Rockwell OV-10 Bronco
   Piper L-4 Grasshopper
   Stinson L-5 Sentinel
   Taylorcraft L-2 Grasshopper
   Westland Lysander

   Aero L-29 Delfin
   Aero L-39 Albatros
   Aermacchi MB-326
   Avro Vulcan
   BAC Strikemaster
   Blackburn (BAC) Buccaneer
   Canadair Tutor
   Cessna A-37 Dragonfly
   DeHavilland Vampire
   DeHavilland Venom
   English Electric Canberra
   English Electric Lightning
   Folland Gnat
   Fouga CM-170 Magister
   Gloster Meteor
   Grumman F9F Panther
   Hawker Hunter
   Hispano HA-200 Saeta
   Hunting Jet Provost
   Lockheed F-104 Starfighter
   Lockheed T-33 Shooting Star
   McDonnell-Douglas A-4 Skyhawk
   McDonnell-Douglas F-4 Phantom
   Messerschmitt Me-262
   Mikoyan MiG-15
   Mikoyan MiG-17
   Mikoyan MiG-21
   N. Am. F-86 Sabre / FJ-4 Fury
   N. Am. F-100 Super Sabre
   N. Am. / Rockwell T-2 Buckeye
   Northrop T-38 Talon / F-5
   PZL / WSK TS-11 Iskra
   Saab J35 Draken
   Soko G-2A Galeb
   Temco Pinto & Super Pinto

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C-1 Trader / S-2 Tracker

(Variants/Other Names: E-1 Tracer. See History below for others)

Grumman S-2 Tracker / C-1 Trader
Photo by Max Haynes -

History: In the late 1940s, the US Navy decided it needed a new aircraft for its anti-submarine missions. Previously, the task had been accomplished by teams of two airplanes, one performing the "hunter" role with its radar, and the other acting as the torpedo-equipped "killer." Logistical problems and advancing technology soon negated the advantages of these two-aircraft attacks, and a single aircraft became the ideal. Grumman responded to this need with a twin-engine, high-wing prototype called the G-89. It featured a large payload capacity for sensors and weapons, a retractable search radar, a magnetic anomaly detector (MAD) boom, searchlights, and other much-needed features. Folding wings and a tailhook made it aircraft-carrier capable.

The prototype aircraft first flew on 4 December 1952, under the US Navy designation XS2F-1. Three major variants appeared almost immediately, and their designations were finalized in 1962 as the S-2 Tracker, the E-1 Tracer, and the C-1 Trader. The S-2A, the first production version of the Tracker, entered anti-submarine service in February 154, and more than 500 were delivered to the US Navy and several other nations. Several of these were delivered as trainers and were called TS-2As.

Other variants included the S-2C (enlarged weapons-bay, larger tail to compensate for higher gross weight); US-2A/B/C (S-2s converted for utility use such as target towing and light transport); RS-2C (photo-reconnaissance); S-2D (increased wing span, larger tail, four-man crew in widened / lengthened fuselage, larger sonobouy payload); S-2E (modified with more advanced search equipment); S-2F (S-2Bs modified with this same equipment); CS-2F/CP-121 (deHavilland-built Trackers for the Royal Canadian Navy); and S-2G (the final advanced version of the Tracker, which served into the 1970s.)

The C-1 Trader, meanwhile, was delivered as a nine-seat transport for use as a Carrier On-board Delivery (COD) aircraft, and the E-1 (WF-2) Tracer was equipped with a large overhead radome containing a powerful APS-82 early-warning search radar. Even after the design was replaced in the US Navy by the jet-powered S-3 Viking, it lives on in several reincarnations. Taiwan purchased at least 32 S-2T Turbo Trackers, which are Grumman-modified S-2s powered by Garrett TPE-331 turboprop engines. Also, the S-2 has become a popular airplane for use as a firefighting water bomber, in the US and elsewhere.

Finally, several S-2s and C-1s are privately owned and flown as warbirds. They are well-loved for their toughness, reliability, and huge load-hauling capability. (What better way to attend an airshow or fly-in than by taking along six or eight friends and all the supplies you'd ever need?)

Nicknames: Stoof (S-2F variant); Stoof with a Roof / Willie Fudd (WF-2/E-1 Tracer variant)

Specifications (S-2E):
        Engines: Two 1,525-hp Wright R-1820-82WA Cyclone 9-cylinder radial piston engines.
        Weight: Empty 18,750 lbs., Max Takeoff 29,150 lbs.
        Wing Span: 72ft. 7in.
        Length: 43ft. 6in.
        Height: 16ft. 7in.
            Maximum Speed at Sea Level: 265 mph
            Patrol Speed at 1,500 ft: 150 mph
            Range: 1,300 miles
            One Mk 57 or Mk 101 nuclear depth bomb or similar in bomb bay.
            60 depth charges in fuselage
            32 sonobuoys in engine nacelles
            Six underwing hardpoints for bombs, rockets, or torpedoes.

Number Built: 1,181 Trackers/Traders

Number Still Airworthy: Approximately 10 flown as warbirds; Unknown number in active military service worldwide, and as firebombers.

"Clark's S-2 Tracker Museum"
Conair, Abbotsford, BC, Canada -- S-2 firebomber conversions.
"The World's First Grumman S-2 Tracker Website"
Tracker Air Group ("The Iron Lady")
Trader Air -- Privately-owned C-1 Trader in Kansas, USA



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All text and photos Copyright 2016 The Doublestar Group, unless otherwise noted.
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