North American Harvard Mk.II (NA-66)

North American Harvard Mk.II (NA-66)
Single-engine two-seat basic monoplane trainer

Archive Photos

North American Harvard Mk.II (RCAF 2532, c/n 66-2265) on display (9/17/2003) at the Canada Aviation Museum, Ottawa, Ontario, Canada (Photos by John Shupek)

Overview

North American T-6 Texan/SNJ/Harvard Series

Role: Trainer aircraft
Manufacturer: North American Aviation
First flight: 1 April 1935
Primary users: United States Army Air Forces; United States Navy; Royal Air Force; South African Air Force
Number built: 15,495
Developed from: North American NA-16
Variants: North American A-27

The North American Aviation T-6 Texan was a single-engine advanced trainer aircraft used to train pilots of the United States Army Air Forces, United States Navy, Royal Air Force and other air forces of the British Commonwealth during World War II and into the 1950s. Designed by North American Aviation, the T-6 is known by a variety of designations depending on the model and operating air force. The USAAC and USAAF designated it as the AT-6, the United States Navy the SNJ, and British Commonwealth air forces, the Harvard, the name it is best known by outside of the US. After 1962, US forces designated it the T-6. It remains a popular warbird aircraft used for airshow demonstrations and static displays.

Development

The Texan originated from the North American NA-16 prototype (first flown on April 1, 1935) which, modified as the NA-26, was submitted as an entry for a USAAC Basic Combat aircraft competition in March, 1937. The first model went in to production and 180 were supplied to the USAAC as the BC-1 and 400 to the RAF as the Harvard I. The US Navy received 16 modified aircraft, designated the SNJ-1, and a further 61 as the SNJ-2 with a different engine.

The BC-1 was the production version of the NA-26 prototype, with retractable tailwheel landing gear and the provision for armament, a two-way radio, and the 550 hp (410 kW) R-1340-47 engine as standard equipment. Production versions included the BC-1 (Model NA-36) with only minor modifications (177 built), of which 30 were modified as BC-1I instrument trainers; the BC-1A (NA-55) with airframe revisions (92 built); and a single BC-1B with a modified wing center-section.

Three BC-2 aircraft were built before the shift to the advanced trainer designation, AT-6, which was equivalent to the BC-1A. The differences between the AT-6 and the BC-1 were new outer wing panels with a swept forward trailing edge, squared-off wingtips and a triangular rudder, producing the definitive Texan appearance. After a change to the rear of the canopy, the AT-6 was designated the Harvard II for RAF/RCAF orders and 1,173 were supplied by purchase or Lend Lease, mostly operating in Canada as part of the British Commonwealth Air Training Plan.

Next came the AT-6A which was based on the NA-77 design and was powered by the Pratt & Whitney R-1340-49 Wasp radial engine. The USAAF received 1,549 and the US Navy 270 (as the SNJ-3). The AT-6B was built for gunnery training and could mount a 30-cal machine gun on the forward fuselage. It used the R-1340-AN-1 engine, which was to become the standard for the remaining T-6 production. Canada’s Noorduyn Aviation built an R-1340-AN-1-powered version of the AT-6A, which was supplied to the USAAF as the AT-16 (1,500 aircraft) and the RAF/RCAF as the Harvard IIB (2,485 aircraft), some of which also served with the Fleet Air Arm and Royal Canadian Navy.

In late 1937 Mitsubushi purchased two NA-16’s as technology demonstrators and possibly a licence to build more. However, the aircraft developed by Watanabe/Kyushu as the K10W1 (Allied code name *ldquo;Oak) bore no more than a superficial resemblance to the North American design. It featured a full monocoque fuselage as opposed to the steel tube fuselage of the T-6 and NA-16 family of aircraft, as well as being of smaller dimensions overall and had no design details in common with the T-6. It was used in very small numbers by the Imperial Japanese Navy from 1942 onwards. After the war the Japanese Air Self Defense Force operated Texans.

The NA-88 design resulted in 2,970 AT-6C Texans and 2,400 as the SNJ-4. The RAF received 726 of the AT-6C as the Harvard IIA. Modifications to the electrical system produced the AT-6D (3,713 produced) and SNJ-5 (1,357 produced). The AT-6D, redesignated the Harvard III, was supplied to the RAF (351 aircraft) and Fleet Air Arm (564 aircraft). The AT-6G (SNJ-5) involved major advancements including a full-time hydraulic system and a steerable tailwheel and persisted into the 1950s as the USAF advanced trainer.

Subsequently the NA-121 design with a completely clear rearmost section on the canopy, gave rise to 25 AT-6F Texans for the USAAF and 931 as the SNJ-6 for the US Navy. The ultimate version, the Harvard 4, was produced by Canada Car and Foundry during the 1950s, and supplied to the RCAF, USAF and Bundeswehr.

A total of 15,495 T-6s of all variants were built.

Combat Use

During the Korean War and, to a lesser extent, the Vietnam War, T-6s were pressed into service as forward air control aircraft. These aircraft were designated T-6 Mosquitos.

No. 1340 Flight RAF used the Harvard in Kenya against the Mau Mau in the 1950s, where they operated with 20-lb bombs and machine guns against the gangs. Some operations took place at altitudes around 20,000 ft above mean sea level. A Harvard was the longest-serving RAF aeroplane, with an example, taken on strength in 1945, still serving in the 1990s (as a chase plane for helicopter test flights, role for which the Shorts Tucano’s high stall speed was ill-suited).

The T-6G was also used in a light attack or counter insurgency role by France during the Algerian war in special Escadrilles d’Aviation Légère d’Appui (EALA), armed with machine guns, bombs and rockets. At its peak, there were 38 EALAs active. The largest unit was the Groupe d’Aviation Légère d’Appui 72, which consisted of up to 21 EALAs.

From 1961 to 1975, Portugal, also, used hundreds of T-6G in the counter insurgency role during the Portuguese Colonial War. During this war, almost all the Portuguese Air Force bases and air fields in Angola, Mozambique and Portuguese Guinea had a detachment of T-6Gs.

In 1957-58, the Spanish Air Force used T-6s as counterinsurgency aircraft in the Ifni War, armed with machine guns, iron bombs and rockets, achieving an excellent reputation due to its reliability, safety record and resistance to damage.

The Pakistan Air Force used T-6Gs in the 1971 war as a night ground support aircraft hitting enemy soft transport vehicles. In the early hours of 5 December, during a convoy interdiction mission in the same area, Squadron Leader Israr Quresh’s T-6G Harvard was hit by enemy ground fire and a shell fractured the pilot’s right arm. Profusely bleeding, the pilot flew the aircraft Back with his left hand and landed safely. The World War II vintage prop-engine trainers were pressed into service and performed satisfactorily in the assigned role of enemy convoys at night.

Mainly as a result of the United Nations arms embargo against South Africa’s Apartheid policies, T-6s remained in service with the South African Air Force as a basic trainer until 1995. They were replaced by Pilatus PC-7 Mk.II turboprop trainers.

In Popular Culture

After WWII, the National Air Races established a unique racing class for the AT-6/Texan/Harvard aircraft; This class continues today at the Reno National Air Races each year.

Since the Second World War, the T-6 has been a regular participant at air shows, and was used in many movies. For example, in Tora! Tora! Tora! and The Final Countdown, converted single-seat T-6s painted in Japanese markings represent Mitsubishi Zeroes, whereas in A Bridge too Far it represented the razorBack Republic P-47 Thunderbolt. The T-6 also appeared in the Pat Benatar video for Shadows of the Night. The New Zealand Warbirds Roaring 40s aerobatic team use ex-Royal New Zealand Air Force Harvard’s.

Recent Research Testbed

The Harvard 4 has also been recently used in Canada as a testbed aircraft for evaluating cockpit attitude displays. Its aerobatic capability permits the instructor pilot to maneuver the ship into unusual attitudes, then turn the craft over to an evaluator pilot in the blind rear cockpit to recover, based on one of several digitally-generated attitude displays.

Variants

North American BC Series

BC-1 — Basic Combat trainer version initial production version with 600-hp 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 center section.
BC-1I — BC-1s converted to instrument trainers, 30 modified.

North American AT-6 Texan Series:

AT-6 Texan — Same as BC-1A with minor changes, powered by a 600-hp R-1340-47 and armed with forward-firing 0.3-in machine gun, nine original started as BC-1As and 85 built.
AT-6A Texan — Same as AT-6 but with 600-hp R-1340-49 and removable wing center 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 Texan — Same as AT-6A but with 600-hp R-1340-AN-1 and dorsal gun fitted as standard, 400 built.
AT-6C Texan — 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 Texan — 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 Texan — One AT-6D re-engine with a 575-hp V-770-9 engine for trials.
AT-6F Texan — 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.

Noorduyn AT-16 Harvard Series:

Noorduyn AT-16 Harvard — Noorduyn built AT-6As for lend-lease as Harvard’s, 1800 built.

T-6 Texan Series

T-6A Texan — AT-6As re-designated in 1948.
T-6C Texan — AT-6Cs re-designated in 1948 including 68 re-builds with new serial numbers.
T-6D Texan — AT-6D re-designated in 1948 including 35 re-builds with new serial numbers.
T-6F Texan — AT-6F re-designated in 1948.
T-6G Texan — 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 600-hp R-1340-AN-1 engine. 2068 modified.
LT-6G Texan — T-6Gs converted for battlefield surveillance and forward air controller duties, 97 modified.
T-6H Texan — Number of T-6Fs converted T-6G standard.
T-6J Texan — Designated used for Canadian-built Harvard Mk.IVs supplied to Belgian, France, Italy, Portugal and West Germany, 285 aircraft.

SNJ Texan Series

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 canceled.

Harvard Series

Harvard I — Similar to BC-1 but without rear gun and with a 600-hp R-1340-S3H1 engine, 400 aircraft.
Harvard II — Similar to BC-1A, 526 built, again without provision for rear gunner.
Harvard IIA (RAF & Commonwealth) — AT-6C, many with wooden rear fuselages when first delivered.
Harvard IIA (RCAF) — Armed Harvard II - Any RCAF Harvard II & IIB fitted with guns (in the wing), rockets or bombs.
Harvard IIB — Noorduyn built Mk.IIs, some to US orders as AT-16s for lend-lease. Transfers Back from the USAAF (1800) and 757 built.
Harvard T.T. IIB — Target Tug - 42 aircraft built for the RAF by Noorduyn. Number probably included in II totals.
Harvard IIF — Bombing/gunnery trainer - One-off modified from Mk.II with bomb aimers blister and AT-6 cockpit.
Harvard III — AT-6D, 537 aircraft for RAF.
Harvard 4 — Development of Harvard II paralleling the T-6G, and built by Canadian Car & Foundry, 270 for the RCAF and 285 for USAF. Some publications refer to these as T-6J however the aircraft record cards do not use this designation.

A-27

North American A-27 — Tandem two-seat attack version of the AT-6 with a 785-hp R-1820-75 engine and five O.3-in 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.

North American Aviation Company Designations

NAA Charge No.	NAA Model or Designation	Customer	Engine Installed	Number	Notes
NA-16	NA-16	USAAC	Wright R-975-E3 Whirlwind (420-hp)	1	Prototype NX-2080, was open cockpit, received greenhouse canopy for trials
NA-18	NA-18	USAAC (trials)	Wright R-975-E3 Whirlwind (420-hp)	1 (modified)	Ex-NA-16, won against Seversky BT-8 and Curtiss-Wright CW-19R, to Argentina in 1937
NA-19	NA-19, BT-9	USAAC	Wright R-975-7 Whirlwind (400-hp)	42	Minor changes from NA-18, new canopy
NA-19A	NA-19A, BT-9A	USAAC	Wright R-975-7 Whirlwind (400-hp)	40	Armed BT-9 with one cowl gun and one rear flexible gun, and suitably modified canopy.
NA-20	NA-16-2H	Trials, to Honduras (FAH)	Wright R-975 Whirlwind (Unknown sub-type)	1	NC16025 originally intended as demonstrator for China
NA-22	NA-22	USAAC (rejected)	Wright R-760ET (J-6-7) (225-hp)	1	Dangerously underpowered
NA-23	NA-23, BT-9B	USAAC	Wright R-975-7 Whirlwind (400-hp)	117	Unarmed. 1 modified as sole BT-9D as BT-14 prototype with new outer wings and other alterations.
NA-26	BC-1	Trials, to Canada (RCAF)	P&W R-1340-S3H1 Wasp (550-hp)	1	Basic Combat Demonstrator NX18990 - no relation to later BC-1, first retractable gear variant, later modified with Yale parts.
NA-27	NA-16-2H	To Fokker and Royal Netherlands AF	P&W R-1340-S2H1 Wasp (500-hp)	1	European demonstrator armed NA-26 with fixed gear.
NA-28	NJ-1	USN	P&W R-1340-6 Wasp (550-hp)	40	USN specification up engine BT-9 as advanced trainer, some re-engine with later R-1340 versions.
NA-29	BT-9C	USAAC	Wright R-975-7 Whirlwind (400-hp)	67	as per BT-9A with minor changes. First aircraft completed as Y1BT-10.
NA-30	BT-10	USAAC (canceled)	P&W R-1340-41 Wasp (600-hp)	0	canceled production version of Y1BT-10
NA-31	NA-16-4M, Sk-14, Sk-14A	Sweden (Flygvapnet)	Wright R-975-E3 Whirlwind (420-hp) Piaggio P VIIc (525-hp)	137	BT-9C but different engine variant. Licence production (NAA built 1, ASJA 76, SAAB 60), Trialled undercarriage for Saab 21.
NA-32	NA-16-1A	Australia (RAAF)	P&W R-1340 Wasp	1	Fixed gear pattern aircraft similar to NJ-1 or Y1BT-10, not followed up.
NA-33	NA-16-2K, Wirraway	Australia (RAAF)	P&W R-1340-S1H1G (600-hp)	756	Retractable gear pattern aircraft for Australia, 1 built by NAA and 755 by Commonwealth Aircraft Corporation)
NA-34	NA-16-4P	Argentina (FAA)	Wright R-975-E3 Whirlwind (420-hp)	29	First major export order (not licence), had 2 cowl guns, a flexible rear gun and a radio mast
NA-36	BC-1	USAAC	P&W R-1340-47 Wasp (500-hp)	177	Retractable undercarriage and first aircraft with square bottom rudder. Large DF loop between undercarriage, blister covering fuel transfer gear along centerline aft of wheel wells.
NA-37	NA-16-4R, KXA1	Japan (IJN) (Evaluation)	P&W R-985-9CG Wasp Junior (500-hp)	1	Technology demonstrator, unarmed, fixed landing gear and three bladed prop.
NA-38	NA-16-4M	Sweden (Flygvapnet)	Wright R-975-E3 Whirlwind (420-hp)	1	same as NA-31
NA-41	NA-16-4	China (ROCAF)	Wright R-975 Whirlwind	35	Similar to BT-9C with short fabric covered fuselage, combat aircraft with two fixed forward guns and one flexible rear gun.
NA-42	NA-16-2A	Honduras (FAH)	P&W R-1340 Wasp (520-hp)	2
NA-43	NA-16-1G	Brazil (Army) (canceled)	Wright R-975 Whirlwind	0	Similar to BT-9C
NA-44	NA-44	to Canada (RCAF)	Wright SG-1820-F52 Cyclone (750-hp)	1	Prototype two-seat export combat aircraft similar to BC-1A
NA-45	NA-16-1GV	Venezuela (FAV)	P&W R-1340 Wasp	3	Possibly originally built to Brazilian contract
NA-46	NA-16-4	Brazil (Navy)	Wright R-975-53 Whirlwind(400-hp)	12	Similar to BT-9C with wingtip slats, small DF loop under fuselage.
NA-47	NA-16-4RW, KXA-2	Japan (IJN) (Evaluation)	Wright R-975-E3 Whirlwind (420-hp)	1	Technology demonstrator
NA-48	NA-16-3C	China (ROCAF)	P&W R-1340 Wasp	15	Similar to NA-45
NA-49	NA-16-1E, Harvard I	United Kingdom (RAF)	P&W R-1340-S3H1 Wasp (600-hp)	400	Straight wing trailing edge, square rudder, short fabric covered fuselage, fixed rear canopy, no blister under wing center section
NA-50	NA-50	Peru (FAP)	Wright R-1820-G3 Cyclone	7	Single seat fighter, NA-16-5
NA-52	SNJ-1	USN	P&W R-1340-6 Wasp(500-hp)	16	Short metal fuselage, square rudder, late wings, fixed rear on canopy
NA-54	BC-2	USAAC	P&W R-1340-45 Wasp (600-hp)	3	Based on NA-36 with some improvements from NA-44, 3 bladed prop and two blister under wing center section.
NA-55-1	BC-1A	USAAC	P&W R-1340-47/-49 Wasp (600-hp)	83	Bought for reserve and Air National Guard units.
NA-56	NA-16-4	China (ROCAF)	P&W R-1340 Wasp	50	Similar to NA-55 (long metal fuselage, fixed gear and engine differences)
NA-57	NA-57, NAA 57 P-2	France (Armée de l’Air)	Wright R-975-E3 Whirlwind (420-hp)	230	Improved NA-23, many captured and used by Germany, some retained by Vichy France
NA-58	BT-14, BT-14A	USAAC	P&W R-985-25 Wasp Junior	251	Similar to Harvard II except for fixed undercarriage and smaller engine. 27 re-engine with 400-hp (298-kW) P&W R-985-11 as BT-14A
NA-59	AT-6-NA	USAAC	P&W R-1340-47 Wasp (600-hp)	94	First examples converted from NA-55 while still on production line, some examples had small DF loop installed
NA-61	NA-16-1E, Harvard I	Canada (RCAF)	P&W R-1340-S3H1 Wasp (600-hp)	30	Later fitted with extended exhaust for cabin heater
NA-64	NA-64, NAA 64-P2/Yale I	France (Armée de l’Air)	Wright R-975-E3 Whirlwind (420-hp)	230	119 to Canada (RCAF) as Yale I, briefly used by France, many captured by Germany
NA-65	SNJ-2	USN	P&W R-1340-36 Wasp	36	Blister covering fuel transfer gear along centerline aft of wheel wells
NA-66	Harvard II	United Kingdom (RAF)	P&W R-1340 Wasp	600	as per NA-59 but fixed rear canopy and no rear gun, also to RNZAF and RCAF, Southern Rhodesia
NA-68	NA-50A, P-64	Thailand (RTAF)	Wright R-1820-77 Cyclone (870-hp)	6	Short outer wing panel angled much further forward than earlier types. Diverted with start of Pacific war to USAAF as P-64
NA-69	NA-44, A-27	Thailand (RTAF)	Wright R-1820-75 Cyclone (745-hp)	10	Fully armed as attack aircraft. Diverted with start of Pacific war to USAAF as A-27
NA-71	NA-16-3	Venezuela (FAV)	P&W R-1340-S3H1 Wasp (550-hp)	3	Two nose guns and rear gun, no wing guns.
NA-72	NA-44	Brazil (Army)	P&W R-1340-AN1/S1H1 Wasp (600-hp)	30	Attack bomber, fitted with small DF loop under fuselage.
NA-74	NA-44	Chile (FACh)	P&W R-1340 Wasp	12	Attack bomber, fitted with small DF loop under fuselage.
NA-75	Harvard II	Canada (RCAF)	P&W R-1340 Wasp	100	Follow on order to NA-66
NA-76	Harvard II	United Kingdom (RAF)	P&W R-1340 Wasp	450	Originally ordered by France, taken over by RAF, many to RCAF
NA-77	AT-6A, SNJ-3	USAAC, USN	P&W R-1340 Wasp	637	same as NA-66
NA-78	AT-6A, SNJ-3/3C	USAAC, USN	P&W R-1340 Wasp	568	As NA-77, first aircraft built in Texas, and to use name Texan
NA-79	SNJ-2	USN	P&W R-1340-56 Wasp	25
NA-81	Harvard II	United Kingdom (RAF)	P&W R-1340 Wasp	125	same as previous RAF Harvard II order.
NA-84	AT-6B	USAAC	P&W R-1340-AN-1 Wasp (600-hp)	400
NA-85	SNJ-3	USN	P&W R-1340 Wasp	0	canceled duplicate of NA-78 for record purposes.
NA-88	AT-6C, AT-6D, XAT-6E, SNJ-4, SNJ-5	USAAC/USAAF, USN	P&W R-1340 Wasp/Ranger V-770	9,331	(last 800 as NA-121) AT-6D used 24 volt electrics, vs previous 12 volt systems. XAT-6E used Ranger V-770.
NA-119	AT-6D	Brazil (FAB)	P&W R-1340 Wasp	81	20 examples built in Brazil under licence
NA-121	AT-6D, AT-6F	USAAF, USN	P&W R-1340 Wasp	4,378	800 AT-6Ds, 211 SNJ-5, 956 AT-6F and 411 SNJ-6. AT-6F and SNJ-6 have clear fixed rear canopy section
NA-128	AT-6D	USAAF, USN	P&W R-1340 Wasp	0	Canceled orders to have been built in Texas.
NA-168	T-6G, LT-6G	USAF/US ANG	P&W R-1340 Wasp	109	Re-manufactured and updated from earlier versions. Mostly internal but canopy simplified slightly.
NA-182	T-6G, LT-6G	USAF/US ANG	P&W R-1340 Wasp	824	as per NA-168, Re-manufactured/updated.
NA-186	Harvard IV	Canada (RCAF)/US MDAP	P&W R-1340 Wasp	555	Design Data for Canadian Car and Foundry possibly to build Harvard IV or T-6G, sole new post war production.
NA-188	T-6G, LT-6G	USAF/US ANG	P&W R-1340 Wasp	107	Re-manufactured and converted from earlier versions.
NA-195	T-6G, LT-6G	USAF/US ANG	P&W R-1340 Wasp	11	Re-manufactured and converted from earlier versions.
NA-197	T-6G	USAF/US ANG	P&W R-1340 Wasp	110	Re-manufactured and converted from T-6D.
NA-198	SNJ-8	USN	P&W R-1340 Wasp	0	canceled Contract for SNJ-8 (similar to T-6G)

Operators

Argentina: Argentine Air Force
Austria: Austrian Air Force
Belgium: Belgian Air Force
Biafra: Biafran Air Force
Bolivia: Bolivian Air Force
Brazil: Brazilian Air Force
Canada: Royal Canadian Air Force, Royal Canadian Navy
Republic of China (Taiwan): Republic of China Air Force
Chile: Chilean Air Force
Colombia: Colombian Air Force
Republic of the Congo: Congolese Air Force
Cuba: Cuban Air and Air Defense Force
Denmark: Royal Danish Air Force
Dominican Republic: Dominican Air Force
El Salvador: Air Force of El Salvador
France: French Air Force
Gabon: Gabon Air Force
Germany: Luftwaffe
Greece: Hellenic Air Force
Hong Kong: Royal Hong Kong Auxiliary Air Force
Honduras: Honduran Air Force
India: Royal Indian Air Force, Indian Air Force
Iran: Iranian Air Force
Israel: Israeli Air Force
Italy: Aeronautica Militare
Japan: Japan Air Self-Defense Force
Katanga:
South Korea: Republic of Korea Air Force
Laos:Royal Laotian Air Force
Mexico: Mexican Air Force
Morocco: Royal Moroccan Air Force
Netherlands: Royal Netherlands Air Force
Mozambique: Mozambique Air and Air Defense Forces
New Zealand: Royal New Zealand Air Force
Norway: Royal Norwegian Air Force
Pakistan: Pakistan Air Force
Paraguay: Paraguayan Air Force, Paraguayan Naval Aviation
Philippines: Philippine Air Force
Portugal: Portuguese Air Force, Portuguese Navy
South Africa: South African Air Force
Southern Rhodesia: Southern Rhodesian Air Force
South Vietnam: Vietnam Air Force
Spain: Spanish Air Force
Soviet Union: Soviet Air Forces
Sweden: Swedish Air Force
Switzerland: Swiss Air Force
Thailand: Royal Thai Air Force
Tunisia: Tunisian Air Force
Turkey: Turkish Air Force: 196 planes of various types
United Kingdom: Royal Air Force, Royal Navy
United States: United States Army Air Corps/Army Air Forces, United States Air Force, United States Navy, United States Marine Corps, United States Coast Guard
Uruguay: Uruguayan Air Force
Venezuela: Venezuelan Air Force
Yugoslavia: SFR Yugoslav Air Force
Zaire:

North American Harvard II Specifications and Performance Data
Note: the "Harvard II" is basically the same as the military AT-6A and naval SNJ-3. The only difference rests with the equipment, the "Harvard II" not being provided with armament but solely with complete dual flight controls. Structure, power plant and dimensions are the same as for the AT-6A and SNJ-3.

Type

Two-seat Advanced Training monoplane.

Wings

Low-wing cantilever monoplane, aluminum-alloy stressed-skin construction.
Two spar center-section, single-spar outer sections and removable wing-tips.
Aerodynamically and statically-balanced ailerons have metal frames and fabric covering.
Split-type trailing-edge flaps inboard from ailerons.
Ailerons and trimming-tabs controlled from cockpits.

Fuselage

Welded chrome-molybdenum steel-tube structure from fireproof bulkhead to rear cockpit, aft of rear cockpit stressed-skin aluminum-alloy monocoque construction.
Forward welded structure covered by quickly-removable aluminum-alloy panels.

Tail Unit

Cantilever monoplane type.
Fixed surfaces of aluminum-alloy stressed-skin construction, movable surfaces have metal frames covered with fabric.
Elevators have trimming-tabs controlled from both cockpits.
Rudder has tab adjustable on ground only.
Horizontal surfaces, interchangeable right and left and quickly removable.

Landing Gear

Retractable cantilever type, with wheels folding inwards.
Hydraulic operation.
Streamline wheels and hydraulic wheel-brakes.
Steerable tail-wheel with damper.

Power Plant

One 550-hp Pratt & Whitney "Wasp" S3H1 radial air-cooled engine.
Two-bladed two-position controllable-pitch airscrew.
Fuel tanks, 111 US gallons capacity (420.2 liters) in center-section.
Oil tank, (9.5 U.S. gallons (36.0 liters) in engine compartment.

Accommodation

Tandem cockpits with individually-operated sliding enclosure.
Adjustable seat in front cockpit, rotating and adjustable gunner’s seat and Back cockpit.

Dimensions

Span: 42 ft 0¼ in (12.9 m)
Length: 28 ft 11^7/8 in (8.8 m)
Height: 11 ft 8½ in (3.5 m)
Wing area: 253.7 ft² (23.6 m²

Weights and Loadings

Weight empty: 3,958 lb (1,795 kg)
Crew: 380 lb (172.5 kg)
Normal loaded weight: 5,260 lb (2,385 kg)
Wing loading: 20.7 lb/ft² (101 kg/m²)
Power loading: 9.5 lb/hp (4.31 kg/hp)

Performance

Maximum speed at 5,000 ft (1,525 m): 206 mph (331.5 km/h)
Cruising speed at 12,000 ft (3,660 m): 180 mph (290 km/h)
Landing speed: 67 mph (108 km/h)
Service ceiling: 23,000 ft (7,010 m)
Normal range: 730 miles (1,173 km)

References

Side View and Photos: John Shupek
Wikepedia: T-6 Texan
Wikepedia: T-6 Variants
Bridgman, Leonard (ed.), "The North American NA-16-3 ’Texan’," Jane’s All The World’s Aircraft 1942, New York: The MacMillan Company, 1943, pp 205c-206c
Bridgman, Leonard (ed.), "The North American ’Harvard II’," Jane’s All The World’s Aircraft 1942, New York: The MacMillan Company, 1943, pp 206c