T-6 Texan variants

This article describes the different variants of the T-6 Texan.

[edit] BC-1

BC-1: Basic Combat trainer version initial production version with 600hp R-1340-47 engine, 177 built
BC-1A: Same as BC-1 but with semi-monocoque rear fuselage, squared-off wingtips and vertical tail surfaces, 93 built.
BC-1B: One BC-1A fitted with an AT-6A wing centre section.
BC-1I: BC-1s converted to instrument trainers, 30 modified

AT-6 Texan: Same as BC-1A with minor changes, powered by a 600hp R-1340-47 and armed with forward-firing 0.3in machine gun, nine original started as BC-1As and 85 built.
AT-6A: Same as AT-6 but with 600hp R-1340-49 and removable wing centre section fuel tanks, 1847 built with 298 transferred to the United States Navy as the SNJ-3. Survivors re-designated T-6A in 1948.
AT-6B: Same as AT-6A but with 600hp R-1340-AN-1 and dorsal gun fitted as standard, 400 built.
AT-6C: Same as AT-6B but with material changes to low-alloy steel and plywood, 2970 built including transfers to the United Kingdom as the Harvard III.
AT-6D: Same as AT-6B but with a 24V DC electrical system, 4388 built including transfers to the United States Navy as the SNJ-5 and to the United Kingdom as the Harvard IIA. Redesignated T-6D in 1948.
XAT-6E: One AT-6D re-engined with a 575hp V-770-9 engine for trials.
AT-6F: Same as AT-6D but with a strengthened airframe and minor modifications, 956 built including transfers to the United States as the SNJ-6, Redesignated T-6F in 1948.

T-6A: AT-6As re-designated in 1948.
T-6C: AT-6Cs re-designated in 1948 including 68 re-builds with new serial numbers.
T-6D: AT-6D re-designated in 1948 including 35 re-builds with new serial numbers.
T-6F: AT-6F re-designated in 1948.
T-6G: Earlier model AT-6/T-6s re-built between 1949-1953. They have improved cockpit layout, increased fuel capacity, modified landing gear with steerable tailwheel, updated radios and a 600hp R-1340-AN-1 engine. 2068 modified.
LT-6G: T-6Gs converted for battlefield surveillance and forward air controller duties, 97 modified.
T-6H: Number of T-6Fs converted T-6G standard.
T-6J: Designated used for Canadian-built Harvard Mk 4s supplied to Belgian, France, Italy, Portugal and West Germany, 285 aircraft.

SNJ

SNJ-1: United States Navy designation same as BC-1 with metal-covered rear-fuselage, 16 built.
SNJ-2: Same as SNJ-1 but with a R-1340-56 engine and detailed changes, 61 built.
SNJ-3: Same as AT-6A, 270 built and 296 transferred from USAAC.
SNJ-3C: SNJ-3 converted as deck landing trainers with arrester gear, twelve modified.
SNJ-4: Same as AT-6C, 1240 built.
SNJ-4C: SNJ-4s converted as deck landing trainers with arrester gear.
SNJ-5: AT-6Ds transferred from the USAAC, 1573 aircraft.
SNJ-5C: SNJ-5s converted as deck landing trainers with arrester gear.
SNJ-6: AT-6Fs transferred from the USAAF, 411 aircraft.
SNJ-7: Early models modified to T-6G standards in 1952.
SNJ-7B: An armed variant of the SNJ-7.
SNJ-8: Order for 240 cancelled.

Harvard IIA

Harvard I: Similar to BC-1 with a 600hp R-1340-S3H1 engine, 400 aircraft.
Harvard II: Similar to BC-1A, 526 built.
Harvard IIA: Similar to AT-6D, 1056 aircraft.
Harvard IIB: Transfers from the USAAF (1800) and 757 built.
Harvard III: 229 aircraft.
Harvard Mk 4: Variant of the T-6G built by Canadian Car & Foundry, 270 for the Royal Canadian Air Force and 285 as T-6Js.

A-27: Tandem two-seat attack version of the AT-6 with a 785hp R-1820-75 engine and five O.3in machine guns (two in nose, one on each wing and one dorsal). Designation used for ten aircraft for Thailand impressed into United States Army Air Corps use.

Watanabe K10W1: Japanese licence built variant of the AT-6 for the Japanese Navy with a 600hp Nakajima Kotbuki II-kai radial engine and minor changes, 26 built.
Kosuka K5Y1: Japanese licence built variant of the AT-6 for the Japanese Navy with a 600hp Nakajima Kotbuki II-kai radial engine and minor changes, 150 built.

John M. Andrade, U.S. Military Aircraft Designations and Serials since 1909, Midland Counties Publications, England, 1979, ISBN 0 904597 22 9

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