UNITED STATES MILITARY AIRCRAFT by Jos Heyman

Last update: 1 February 2015 UNITED STATES MILITARY AIRCRAFT by Jos Heyman Air Force 1919-1924 designation system

A = Ambulance A-1 Cox Klemin span: 44'9", 13.64 m length: 30'8", 9.35 m engines: 1 Liberty 12A max. speed: 121 mph, 195 km/h (Source: Allan Routt, via 1000aircraftphotos.com photo #3286) The XA-1 was a two-stretcher ambulance aircraft of which two were built with serials 23-1247/1248. The two aircraft were also flown with Wright Field serials P-383 and P-421 respectively.

A-2 Fokker span: 79'8", 24.28 m length: 49'1", 14.96 m engines: 1 Liberty 12A max. speed: 101 mph, 163 km/h (Source: USAF via 10af.afrc.af.mil/photos) A single T-2 transport aircraft was converted as an A-2 ambulance with two stretchers and an attendant. The serial was 64234. Refer also to T-2

AO = Artillery Observation AO-1 Atlantic span: 39'6", 12.04 m length: 30'4", 9.25 m engines: 1 Liberty 12A max. speed: 135 mph, 217 km/h (Source: via Aerofiles.com) A single XCO-4 with serial 68566 was converted as the AO-1 prototype. It was also flown with Wright Field serial P-365.

CO = Corps Observation CO-1 Engineering Division span: 55'9", 16.99 m length: 33'7", 10.24 m engines: 1 Liberty 12 max. speed: 117 mph, 188 km/h (Source: USAAF via Aerofiles.com) Designed by Laddon of the Army s Engineering Division, two CO-1 aircraft were built by the Engineering Division. One received serial 64321 whilst the other aircraft was used for static tests without a serial. Aircraft 64321 was also flown with Wright Field serial P-234. In addition three aircraft were ordered on 22 June 1922 from Gallaudet with serials 68587/68589 of which the last two were cancelled. The Gallaudet built aircraft had a span of 56'2", 17.12 m and a length of 33'8", 10.26 m. Aircraft 68587 was also flown with Wright Field serial P-281. A XCO-1 version, with unknown specifications, was not built.

CO-2 Engineering Division span: 41'1", 12.52 m length: 30'9", 9.37 m engines: 1 Liberty 12 max. speed: 137 mph, 220 km/h (Source: USAAF?) Designed by Roche of the Army s Engineering Division, two CO-2s were built of which one aircraft was used for static testing. The serial was 68577 and it was also flown with Wright Field serial P-255. The second aircraft did not receive a serial.

CO-3 Engineering Division span: 55'9", 16.99 m length: 33'7", 10.24 m engines: 1 Liberty 12 max. speed: The CO-3 was a fabric covered version of the CO-1 which was not built. Refer also to CO-1

CO-4 Fokker 3 span: 39'6", 12.04 m length: 30'4", 9.25 m engines: 1 Liberty 12A max. speed: 134 mph, 216 km/h (Source: Jack McKillop, via 1000aircraftphotos.com photo #7533) The CO-4 design was based on Fokker s experience with its C-IV and D-VII designs. After a European tour in 1921 by General Mitchell, the USAAC bought three CO-4s on 29 May 1922 with serials 68557, 68565 and 68566. It is believed each aircraft was slightly different in details. One of these aircraft was later used for development testing as XCO-4. It had serial 68565 and had a length of 29'8", 9.04 m. Eventually five XCO-4As were ordered with serials 23-1205/1209. On completion of testing these were redesignated as CO-4A. Several aircraft were also flown with Wright Field serials: 68557 as P-250, 68565 as P-284, 68566 as P-285 and 23-1209 as P- 325. Refer also to AO-1

CO-5 Engineering Division span: 43', 13.11 m length: 27'2", 8.28 m engines: 1 Liberty 12A max. speed: 134 mph, 216 km/h (Source: USAAF?) The XCO-5 was an observation aircraft designed by Boulton and Kerber of the Army s Engineering Division. The first aircraft, 68579, was originally ordered as TP-1, of which the CO-5 design was a derivative. The second aircraft, with serial 23-1204, was ordered later and was also flown with Wright Field serial P-305. It was subsequently converted to XCO-5B. There is no reference to an XCO-5A.

CO-6 Engineering Division span: 48', 14.63 m length: 29'8", 9.04 m engines: 1 Liberty V-1410 max. speed: 132 mph, 212 km/h (Source: USAAF?) This observation aircraft was designed by Du Roche of the Army s Engineering Division. Two XCO-6s were ordered but only serial 23-1236 is known. The aircraft was later modified as XCO-6B when it received a Liberty 12A engine, giving it a length of 30'3", 9.22 m. Later on it was further converted with a different propeller and undercarriage and was redesignated as XCO-6C. It was also flown with Wright Field serial P-360. The second aircraft masy have been used for static tests without ever having received a serial but there is no supporting evidence for this suggestion. A projected version with tanks in the upper wings and known as XCO-6A, was not built.

CO-7 Boeing span: 45', 13.72 m length: 30'4", 9.25 m engines: l Liberty 12A max. speed: 130 mph, 209 km/h (Source: Nelson George, via 1000aircraftphotos.com photo #5192) Boeing developed the XCO-7 from the De Havilland DH-4 airframe. Reference sources are not clear on the correct serials and both versions are listed here. The XCO-7 was in fact a single DH-4M-2 which was converted as a two seat observation aircraft. It was not flown but was used for static tests only. The serial was 22884 or 24-452. The XCO-7A was a converted DH-4M-1 and had serial 23109 or 24-453. Finally a DH-4M-1 was converted as XCO-7B (model 42). It had a Liberty V-1410 engine and a length of 30'11', 9.42 m. The serial was 31216 or 24-454 and it was also flown with Wright Field serial P-368. Refer also to O2B

CO-8 Atlantic span: 45', 13.72 m length: 30', 9.14 m engines: 1 Liberty 12A max. speed: 130 mph, 209 km/h (Source: USAAF?) A single Atlantic built DH-4M-2 was fitted with the wings of a CAO-1 for testing purposes as XCO-8. The serial was 23163 and it was also flown with Wright Field serial P-369.

DB = Day Bomber DB-1 Gallaudet span: 67', 20.42 m length: 44', 13.41 m engines: 1 Engineering Div. W-18 max. speed: 30 km/h, 209 km/h (Source: USAF, via 10af.afrc.af.mil/photos) The DB-1 was a two seat bomber and two were ordered on 24 December 1924 from Gallaudet with serials 64238 and 64239. The first aircraft was used for static tests only whilst the second aircraft was completed as DB-1B, which had a span of 66'5", 20.24 m, length of 42', 12.80 m and a W-1A engine. It was also flown with Wright Field serial P-304. The DB-1A designation was not used.

GA = Ground Attack GA-1 Boeing span: 65'6", 19.96 m length: 33'7", 10.24 m engines: 2 Liberty 12A max. speed: 105 mph, 169 km/h (Source: Wiggins Fitz, via 1000aircraftphotos.com photo #3999) The GA-1 was based on the GAX design built by the Engineering Division. The GAX was ordered in 1919 with serial 63272. It was also flown with Wright Field serial P-129. The aircraft was to land behind enemy lines, position guns in a defensive parameter and hold the position until ground infantry would arrive. 10 GA-1s were ordered on 16 June 1920 with serials 64145/64154 and the first flight was in May 1921. Aircraft 64146 was also flown with Wright Field serial P-187. A further 10 aircraft may have been cancelled although there is no evidence of such a contract.

GA-2 Boeing 10 span: 54', 16.46 m length: 37', 11.28 m engines: 1 Engineering Div. W-1A-18 max. speed: 98 mph, 158 km/h (Source: David Gauthier, via 1000aircraftphotos.com photo #7992) The GA-2 carried a 37 mm cannon in the lower wing and various other armament was fitted. Three aircraft were ordered on 20 December 1920 with serials 64235/64237. The third one, with serial 64237 was never completed. The two completed aircraft were also flown with Wright Field serials P-248 and P-310 respectively.

IL = Infantry Liaison IL-1 Orenco E2 span: 46', 14.02 m length: 32', 9.75 m engines: 1 Liberty 12 max. speed: 107 mph, 172 km/h (Source: USAAF?) Two IL-1s were built against an order placed on 26 January 1920. The serials were 63273/63274. They were also flown with Wright Field serials P-147 and P-168 respectively.

M = Messenger M-1 Engineering Division span: 20', 6.10 m length: 17'9", 5.41 m engines: 1 Lawrence L3 max. speed: 97 mph, 156 km/h (Source: USAAF?) The M-1 was a messenger carrying aircraft developed by the Engineering Division. Production M-1s, built by Sperry, were ordered from 14 April 1920, including one rebuilt, with serials 64223/64227, 6 aircraft in serial block 64250/64299, 6 aircraft in serial block 64324/64345, 68472/68477, 68528/68533, 22-001/006 and 22-329/348. Aircraft 64224 was also flown with Wright Field serial P-152. The M-1A version had a Lawrence L-2 engine and a length of 17'11", 5.46 m. 16 were built with serials 22-351/355 and 22-360/370. Eight M-1s and three Standard E-1 advanced trainers, were converted by Sperry as MAT aerial torpedoes. The serials included 64228/64230, 22-001 and others, and 22-349/350. Several aircraft were also flown with Wright Field serials: 64226 as P-399, 68473 as P-294, 68475 as P-233, 68476 as P-224, 68477 as P-225, 68533 as P-306, and 22-001 as P-373.

NBL = Night Bomber/Long Distance NBL-1 Witteman-Lewis span: 120', 36.58 m length: 65', 19.81 m engines: 6 Liberty 12A max. speed: 95 mph, 153 km/h (Source: Gordon Hubbard, via 1000aircraftphotos.com photo #3516) Designed by Barling of the Engineering Division, two NBL-1s were ordered on 23 June 1920 with Witteman Lewis with serials 64215/64216. Only the first aircraft was built and it flew for the first time on 22 August 1923 and remained in use until 7 May 1925. It was also flown with Wright Field serial P-303.

NBL-2 Martin span: length: engines: max. speed: 98', 29.87 m 53', 16.15 m 2 Engineering Div. W2779 Two XNBL-2s were ordered in 1922 but were subsequently cancelled before construction began.

NBS = Night Bomber/Short Distance NBS-1 Martin span: 74'2", 22.61 m length: 42'8", 13.00 m engines: 2 Liberty 12A max. speed: 99 mph, 159 km/h (Source: USAAF?) Although the NBS-1 short range bomber with a crew of four was designed by Martin, 20 were built by Martin (as MB-2), 25 by Aeromarine, 35 by LWF and 50 by Curtiss (as model 50). The serials were 64195/64214, 68437/68471, 68478/68527 and 22-201/225 and the first order was placed on 9 June 1920. The first aircraft, 64195 was also flown with Wright Field serial P- 162. Other aircraft flown with Wright Field serials were 64196 as P-227, 643201 as P-222, 68482 as P-254, 68508 as P-293, 68519 as P-316, 68526 as P-322 and 68523 as P-399.

NBS-2 LWF span: 90', 27.43 m length: 46'5", 14.15 m engines: 2 Liberty 12A max. speed: 110 mph, 176 km/h (Source: USAAF? Via airminded.net) The Lowe-Willard-Fowler (LWF) NBS-2 was a bomber design based on the larger LWF Owl, a three engined mailplane with a 107-foot wing span. It was to be a scaled down version with only two engines. Two aircraft were ordered with serials 68569/68570 but the project was cancelled before construction began.

NBS-3 Elias span: 77'6", 23.62 m length: 48'5", 14.76 m engines: 2 Liberty 12A max. speed: 100 mph, 161 mph (Source: Dan Shumaker, via 1000aircraftphotos.com photo #?) The XNBS-3 was a four crew bomber consisting of a steel tube frame fuselage and a wooden wing. Two aircraft were ordered on 17 June 1922 with serials 68567/68568 but only the first aircraft was completed. It failed to pass acceptance tests. It was also flown with Wright Field serial P-335.

NBS-4 Curtiss 36 span: 90'2", 27.48 m length: 46'6", 14.17 m engines: 2 Liberty 12A max. speed: 103 mph, 166 km/h (Source: Philo Lund, via 1000aircraftphotos.com photo #6178) Two XNBS-4s were ordered on 17 June 1922 with serials 68571/68572 and remained in use until July 1930. They were also flown with Wright serials P-352 and P-434 respectively.

NBS-5 Gallaudet span: length: engines: max. speed: Two XNBS-5s were ordered on 22 June 1922 with serials 68573/68574 but were subsequently cancelled.

NO = Night Observation NO-1 Douglas span: 35'8", 10.87 m length: 29'6", 8.99 m engines: 1 Curtiss V-1400 max. speed: The XNO-1 was a project only and no aircraft were built or procured.

NO-2 Douglas span: 54'6", 16.61 m length: 35', 10.67 m engines: 2 Wright R-790 max. speed: The XNO-2 was a project only and no aircraft were built or procured.

PA = Pursuit/Air Cooled PA-1 Loening span: 28', 8.53 m length: 19'9", 6.02 m engines: 1 Curtiss R-1454 max. speed: 124 mph, 200 km/h (Source: Dan Shumaker, via 1000aircraftphotos.com photo #12439) Ordered on 20 January 1921, one PA-1 was completed with serial 64248 whilst a second aircraft, with serial 64249, was cancelled before completion. Aircraft 64248 was also flown with Wright Field serial P-244.

PG = Pursuit/Ground Attack PG-1 Aeromarine GPX span: 40', 12.19 m length: 24'6", 7.47 m engines: 1 Wright K2 max. speed: 124 mph, 200 km/h (Source: USAF, via 10af.afrc.af.mil/photos) Designed by Laddon of the Engineering Division, three PG-1s were ordered on 15 March 1921 with serials 64245/64247. The contract was completed by Boeing. Aircraft 64245 was also flown with Wright Field serial P-240.

PN = Pursuit/Night PN-1 Curtiss span: 30'10", 9.40 m length: 23'6", 7.16 m engines: 1 Liberty 6 max. speed: 108 mph, 174 km/h (Source: USAAF?) Designed by the Engineering Division, three PN-1 aircraft were ordered on 28 February 1920 but only one, 63276, was completed and flew for the first time in August 1921. It was also flown with Wright Field serial P-198. The performance was found lacking. The second aircraft (63277) was cancelled whilst the third aircraft, which did not have a serial, was used for static tests only.

PS = Pursuit/Special Alert PS-1 Dayton-Wright span: 30', 9.14 m length: 19'2", 5.84 m engines: 1 Lawrence J1 max. speed: 145 mph, 233 km/h (Source: David Horn, via 1000aircraftphotos.com photo #9424) Fitted with a retractable undercarriage, three XPS-1s were ordered on 29 June 1921 with serials 68534/68536. The first flight was in November 1922. Aircraft 68535 and 68536 were also flown with Wright Field serials P-308 and P-311 respectively.

PW = Pursuit/Water Cooled PW-1 Engineering Division VCP-2 span: 32', 9.75 m length: 22'6", 6.86 m engines: 1 Packard 1A-1237 max. speed: 146 mph, 235 km/h (Source: ADF) Designed by Verville-Clark as the Pursuit-2, two examples of the PW-1 were ordered. The first one had serial 64350 whilst the second aircraft, which was used in static tests only, did not have a serial. Aircraft 64350 was also flown with Wright Field serial P-189. The first flight took place in November 1921. Initially a Packard 1A-1170 was to be fitted. Later on the PW-1 was fitted with a different wing with a span of 31 2, 9.50 m and was redesignated as PW-1A. The PW-1B variant with a different wing was cancelled.

PW-2 Loening span: 39'8", 12.09 m length: 24'2", 7.37 m engines: 1 Wright Hispano H max. speed: 132 mph, 212 km/h (Source: USAAF?) Three PW-2s were built with serials 64139/64141 after that an order had been placed on 10 April 1920. This was followed by six PW-2A which had a redesigned fuselage with a length of 26'1", 7.95 m and a span of 39'9", 12.12 m. The serials were 64388/64389 and 22-244/247 whilst 22-248/255 were cancelled. One PW-2A, 64389, was later fitted as PW- 2B with a wing with a span of 34'1", 10.39 m. The fuselage was also shortened to 23'4", 7.11 m whilst a Packard 1A-1237 was fitted. Several aircraft were also flown with Wright Field serials: 64140 as P-183, 64141 as P-221, 64388 as P-233, 64389 as P-236, 22-246 as P-294 and 22-247 as P-272.

PW-3 Orenco D2 span: 27'9", 8.46 m length: 23'10", 7.26 m engines: 1 Wright Hispano H max. speed: 140 mph, 225 km/h (Source: Gordon Hubbard, via 1000aircraftphotos.com photo #3404) Three PW-3s were ordered on 23 April 1920 with serials 64142/64144 but, although they were apparently delivered, they were never flown. Aircraft 64144 was also given Wright Field serial P-229.

PW-4 Gallaudet span: 29'10", 9.09 m length: 22'8", 6.91 m engines: 1 Packard 1A-1237 max. speed: 145 mph, 233 km/h (Source: USAF) Three PW-4s were ordered on 29 June 1921 but when the first aircraft, 64385, failed static loading tests the remaining two aircraft, which had serials 64386/64387, were cancelled.

PW-5 Fokker F-VI span: 39'5", 12.01 m length: 27'2", 8.28 m engines: 1 Wright Hispano H max. speed: 137 mph, 220 km/h (Source: Dan Shumaker, via Aerofiles.com) Based on the Fokker V-40 design, thirteen PW-5s were ordered from 4 December 1920 with serials 64231/64232, 64547, and 68547/68556. Several aircraft were also flown with Wright Field serials: 64231 as P-231, 64232 as P-232, 64547 as P-265 and 68554 as P-266.

PW-6 Fokker D-IX span: 29'6", 8.99 m length: 23'4", 7.11 m engines: 1 Wright Hispano H2 max. speed: 138 mph, 222 km/h (Source: USAAF, via San Diego Air and Space Museum) One PW-6 was procured on 30 June 1922 with serial 68575 and was tested. It was also flown with Wright Field serial P-246.

PW-7 Fokker D-XI span: 38'4", 11.68 m length: 23'11", 7.29 m engines: 1 Curtiss D-12 max. speed: 151 mph, 243 km/h (Source: Jack McKillop, via 1000aircraftphotos.com photo #7472) Three PW-7s were ordered on 10 August 1922 and delivered in February 1924 with serials 68580/68582. They were evaluated against the PW-9. The Fokker D-XI had flown for the first time on 5 May 1923. Several aircraft were also flown with Wright Field serials: 68580 as P-326, 68581 as P-327 and 68582 as P-378.

PW-8 Curtiss 33 Hawk span: 32'6, 9.91 m length: 22'6", 6.86 m engines: 1 Curtiss D-12 max. speed: 168 mph, 270 km/h (Source: USAF) Three XPW-8 prototypes were ordered on 27 April 1923. They had serials 23-1201/1203 and had a span of 32', 9.75 m. Aircraft 23-1201 was also flown with Wright Field serial P-295 whilst 23-1202 was also flown with Wright Field serial P-333. In 1923 23-1201 was converted as CO-X for the 1923 Pulitzer Races. The PW-8 version, to which the specifications apply, was ordered on 25 September 1923 and 25 examples were built with serials 24-201/225. Aircraft 24-201, 24-202 and 24-204 were also flown with Wright Field serials P-357, P-358 and P-361 respectively. A single XPW-8 was converted as the model 34 or XPW-8A. Carrying serial 23-1203, it had a span of 30', 9.14 m and was, after delivery on 4 September 1924, used as a racer. It was also flown with Wright Field serial P-364. The XPW-8B was converted from the XPW-8A (23-1203) when it was fitted with a new wing with a span of 31'6", 9.60m. It served as a prototype for the further development of the P-1 series. Refer also to AT-4, AT-5, F-1, F-2, F-3, F-5, F-6, F-11, F-17, F-20, F-21, F-22, F-23, F7C

PW-9 Boeing 15 span: 32'1", 9.78 m length: 22'10", 6.96 m engines: 1 Curtiss D12 max. speed: 161 mph, 259 km/h (Source: Gordon Hubbard, via 1000aircraftphotos.com photo #3442) Three XPW-9 prototypes were ordered with serials 23-1216/1218 and the first flight was on 29 April 1923. The three aircraft were also flown with Wright Field serials P-309, P-355 and P-356 respectively. This was followed by a production run of 30 PW-9s with serials 25-295/324. Of these aircraft 25-295 was also flown with Wright Field serial P-430. The PW-9A version was fitted with a Curtiss V-1150-1 engine and 25 were built with serials 26-351/375 against an order placed on 26 October 1925. The single PW-9B, fitted with a V-1150-3 engine, was ordered on 19 June 1926 and was converted from PW-9A 26-375. An order for 40 PW-9Cs was placed on 18 August 1926. They had a span of 32', 9.75 m, a length of 23'1", 7.04 m and a V-1150-3 engine. The serials were 26-443/457 and 27-178/202. A single PW-9C (27-202) was converted as PW-9D and another 16 aircraft with serials 28-026/041 were ordered as this version outright on 26 June 1925. These aircraft had a length of 24'3", 7.39 m. Aircraft 27-202 and 28-040 were also flown with Wright Field serials P-504 and P-516. Refer also to AT-3, F-4, F-7, FB

R = Racer R-1 Engineering Division VCP-1 span: 27'6", 8.38 m length: 24'7", 7.49 m engines: 1 Wright Hispano max. speed: 179 mph, 288 km/h (Source: USAAF) Designed by Verville and Clark of the Engineering Division, two R-1s were built with serials 40126/40127. Only the first one of these flew, as VCP-1, and the aircraft was later re-engined with a Packard 1A-2025 and entered in the Pulitzer Race of 1920 as VCP-R. It was also flown with Wright Field serial P-97. The second aircraft was a VCP-2 and was cancelled. The R-1 designation was not assigned until 1922.

R-2 Thomas Morse MB.6 span: 19', 5.79 m length: 18'6", 5.64 m engines: 1 Wright Hispano A max. speed: 162 mph, 261 km/h (Source: USAAF?) The MB.6 was a racer version of the MB.3 which was ordered on 24 May 1921. Three aircraft were built with serials 68537/68539 although some reference sources suggest only one serial was used. The first flight was on 21 October 1921 and in 1922 the aircraft were redesignated as R-2 by which time 68537 had been written off. Aircraft 68537 was entered in the 1921 Pulitzer Race by Thomas Morse. Aircraft 68539 was also flown with Wright Field serial P-370.

R-3 Verville Sperry span: 29'3", 8.92 m length: 22'5", 6.83 m engines: 1 Wright H-3 max. speed: 191 mph, 307 km/h (Source: USAAF?) Three examples of the R-3 were built for the 1922 Pulitzer Race with serials 22-326/328. One was later fitted with a Curtiss D12 engine and won the 1924 race. Aircraft 22-326 was also flown with Wright Field serial P-269 whilst 22-328 was flown with Wright Field serial P-362.

R-4 Loening span: 27', 8.23 m length: 23'6", 7.16 m engines: 1 Packard 1A-2025 max. speed: 174 mph, 280 km/h (Source: USAF) Two R-4s were built for the 1922 Pulitzer Race. They were ordered on 27 May 1922 with serials 68559/68560. Aircraft 68559 was also flown with Wright Field serial P-267.

R-5 Thomas Morse TM22 span: 29'2", 8.89 m length: 19'10", 6.05 m engines: 1 Packard 1A-2025 max. speed: 179 mph, 288 km/h (Source: USAF) Two examples of the R-5 were ordered on 5 June 1922 with serials 68561/68562. The first flight took place earlier on 29 September 1922 and the aircraft were entered in the 1922 Pulitzer Race. Aircraft 68562 was also flown with Wright Field serial P-268.

R-6 Curtiss span: 19', 5.79 m length: 18'11", 5.77 m engines: 1 Curtiss D-12 max. speed: 236 mph, 380 km/h (Source: Library of Congress) Based on the Navy s Curtiss CR design, two R-6s were ordered on 22 May 1922 to take part in the 1922 Pulitzer Race. The serials were 68563/68564. The aircraft were too late for the 1922 race and were used in the 1923 race. The second aircraft was destroyed in the 1924 race whilst the first aircraft did not survive the 1925 race. The aircraft were also flown with Wright Field serials P-279 and P-278 respectively.

R-7 Engineering Division span: length: engines: max. speed: R-7(?) The R-7 single seat monoplane design was not built.

R-8 Curtiss 32 span: 22', 6.71 m length: 19'9", 6.02 m engines: 1 Curtiss D12A max. speed: 266 mph, 428 km/h (Source: USAF) After the 1923 Pulitzer Race the Army purchased US Navy R2C-1 A6691 for the token price of $1 and redesignated it R-8 and gave it the serial 23-1235. It was also flown with Wright Field serial P-354. The aircraft crashed on 2 September 1924. Refer also to F2C, R2C

S = Seaplane S-1 Loening 23 Air Yacht span: 45', 13.72 m length: 30', 9.14 m engines: l Liberty 12 max. speed: 135 mph, 217 km/h (Source: USAAF?) The Air Yacht was a four passenger seaplane of which 9 were procured as S-1 and given serials 23-001/23-008 and 24-001.

T = Transport T-1 Martin GMP span: 71'5", 21.77 m length: 44'10", 13.67 m engines: 2 Liberty 12A max. speed: 106 mph, 171 km/h (Source: Wiggins Fitz, via 1000aircraftphotos.com photo #4412) The last in the series of Martin GMB aircraft was fitted as a transport aircraft with the initial designation GMP and later the designation T-1. All military equipment was removed and the top of the fuselage was raised with cabin windows and seats added. The cockpit was enclosed. The serial was 62951 although some sources maintain that there were actually two aircraft, the second with serial 39064, a serial assigned to a Curtiss R-4L.

T-2 Fokker F-IV span: 79'8", 24.28 m length: 49'1", 14.96 m engines: 1 Liberty 12A max. speed: 95 mph, 153 km/h (Source: USAAS) The T-2 was a tansport aircraft built by Fokker in The Netherlands as the Fokker F-IV. Two aircraft were procured with serials 64233/64234 of which the second aircraft was converted as the A-2 ambulance. The first aircraft was later converted for a non-stop transcontinental flight made in May 1923. The aircraft, which had been ordered on 4 December 1920, were also flown with Wright Field serials P243 and P253 respectively.

T-3 LWF span: 54', 16.46 m length: 42', 12.80 m engines: 1 Liberty 12A max. speed: 93 mph, 150 km/h (Source: David Horn, via 1000aircraftphotos.com photo #8823) Although 10 T-3s had been ordered, the only aircraft built was found to be overweight and inefficient to handle and was relegated as an engine test bed. In that use it was redesignated as XT-3. It had serial 23-1220 and was also flown with Wright Field serial P-328. The other nine aircraft might have been serialled as 23-1219 and 23-1221/1228.

TA = Trainer/Air Cooled TA-1 Elias span: 32'7", 9.93 m length: 24'9", 7.54 m engines: 1 Lawrence R-1 max. speed: 87 mph, 140 km/h (Source: USAAF?) Three aircraft were ordered on 28 June 1920 as TA-1, of which one had an ABC Wasp engine. The serials were 64220/64222. Aircraft 64221 and 64222 were also flown with Wright Field serials P-178 and P-185 respectively.

TA-2 Huff-Daland span: 30'10", 9.40 m length: 24'2", 7.37 m engines: 1 ABC Wasp max. speed: 90 mph, 145 km/h (Source: Dan Shumaker, via 1000aircraftphotos.com photo #7750) Based on the HD4 Bridget, three TA-2s were ordered on 4 June 1920 of which one was used for static tests. Serials were 64217/64219. Later a Curtiss OX-5 and a Lawrence J-1 engine were fitted. Aircraft 64218 was also flown with Wright Field serials P-166, P-184 and P-238, whilst aircraft 64219 was flown with P-242.

TA-3 Dayton Wright Chummy span: 30'11", 9.42 m length: 22'7", 6.88 m engines: 1 Le Rhone C-9 max. speed: 83 mph, 134 km/h (Source: David Horn, via 1000aircraftphotos.com photo #9425) Side-by-side trainer developed by the Engineering Division. 13 TA-3s were ordered from 29 June 1921 with serials 64390/64392 and 22-266/275. Several were also flown with Wright Field serials: 64390 as P-230, 64391 as P-239, 64392 as P-262, 22-266 as P-276 and P-407 (serial not known).

TA-4 Engineering Division span: length: engines: max. speed: 32', 9.75 m 21'7", 6.58 m 1 Lawrence J1 The TA-4 was ordered in 1921 but was not built.

TA-5 Dayton Wright span: 34'9", 10.59 m length: 25'8", 7.82 m engines: 1 Lawrence J1 max. speed: 104 mph, 167 km/h (Source: Nico Braas, via 1000aircraftphotos.com photo #11716) One TA-5 was built with serial 68583. In was ordered on 30 November 1922. It was also flown with Wright Field serial P-283. Refer also to TW-3

TA-6 Huff Daland span: 29'4", 8.94 m length: 23'6", 7.16 m engines: 1 Lawrence J1 max. speed: 115 mph, 185 km/h (Source: David Horn, via 1000aircraftphotos.com photo #9095) The TA-6 was based on the TA-2 and was ordered on 12 October 1922 with serial 68584. Some reference sources refer to this aircraft as a TA-2. It was also flown with Wright Field serial P-280. Refer also to TA-2

TP = Two seat Pursuit TP-1 Engineering Division span: 36', 10.97 m length: 25'1", 7.65 m engines: 1 Liberty 12 max. speed: 130 mph, 209 km/h (Source: USAAF?) The TP-1 was a biplane fighter designed by Verville Clark and one was completed with serial 68578. Later this aircraft was redesignated as XTP-1. A second TP-1 was also ordered but was completed as XCO-5. It had serial 68579. Aircraft 68578 was also flown with Wright Field serial P-263. Refer also to CO-5

TW = Trainer/Water Cooled TW-1 Engineering Division span: 41', 12.50 m length: 28'10", 8.79 m engines: 1 Liberty 6 max. speed: 97 mph, 156 km/h (Source: USAAF?) Two TW-1s were built of which one had a Packard 1A-1237 engine. The serials were 64317/64318. Aircraft 64317 was also flown with Wright Field serial P-200.

TW-2 Cox-Klemin span: 29', 8.84 m length: 23'9", 7.24 m engines: 1 Wright Hispano E max. speed: 99 mph, 159 km/h (Source: USAAF?) Three aircraft were ordered on 3 December 1921 as TW-2. The serials were 68540/68542. Aircraft 68541 and 68542 were also flown with Wright Field serials P-264 and P-286 respectively.

TW-3 Dayton-Wright span: 34'9", 10.59 m length: 25'7", 7.80 m engines: 1 Wright Hispano E max. speed: 101 mph, 163 km/h (Source: Nico Braas, via 1000aircraftphotos.com photo #11717) Two TW-3 prototypes with a Wright Hispano 1 engine were built followed by 20 production aircraft built by Consolidated. The serials were 22-226, 22-401, 22-402, 23-1300/1319. The status of serial 22-227 is not clear but it was probably cancelled. One aircraft was transferred to the USMC with serial A6730. Aircraft 23-1309 was also flown with Wright Field serial P-338 whilst 22-401 was also flown with Wright Field serial P-273.

TW-4 Fokker S-1 span: 41'8", 12.70 m length: 29'3", 8.92 m engines: 1 Curtiss OX-5 max. speed: 85 mph, 137 km/h (Source: David Horn, via 1000aircraftphotos.com photo #9428) One TW-4 was ordered on 30 June 1922 with serial 68576 but was not accepted due to control problems on take-off and landing. It was also flown with Wright Field serial P-245.

TW-5 Huff Daland span: 31'1", 9.47 m length: 24'8", 7.52 m engines: 1 Wright Hispano E2 max. speed: 112 mph, 180 km/h (Source: USAAF?) Five TW-5s were built with serials 23-1211/1215 but these were eventually redesignated as AT-1. Aircraft 23-1211 was also flown with Wright Field serial P-324 whilst another aircraft was flown with serial P-317. Refer also to AT-1