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USAAS McCook Field P-Numbers 1919-1930

In the mid-1950s AAHS member Warren Bodie with the assistance of Ms. Jennie Reeves (custodian of the Wright Field still photo files), Peter M. Bowers, William T. Larkins and John Sloan compiled an index of the aircraft tail numbers (P-number) for McCook Field (and later Wright Field).  The period covered was 1918 through 1930.  P-numbers were assigned to aircraft used in engineering and research evaluations during this period. Even at this date no one is sure what the “P” represented – plane, project or procurement.  Aviation historians and photograph collectors have long noted these identifier numbers painted on the rudders of various aircraft. The original list was published in Vol. 1, No. 4, of the AAHS Journal (October-December 1956). This information has been updated using a number of published references including significant data provided by Drew Taylor derived directly from the airplane records by month for both engineering divisions at McCook and Wright Fields, and further supplemented by Robert Casari.

The following is an updated listing of the McCook Field P-numbers. It includes additional aircraft that were not in the original listing, as well as information regarding the engines installed (in many cases including their Air Service number).  A notes column has been added that contains additional information about the aircraft.

P-No. A.S. No. Make Model Engine H.P. Eng. A.S. No. Notes
P-408 ? - - - - - -
P-409 24-420 Curtiss P-2 Curtiss V-1400 435 - -
P-410 ? - - - - - -
P-411 ? - - - - - -
P-412 ? - - - - - -
P-413 ? - - - - - -
P-414 ? - - - - - -
P-415 ? - - - - - -
P-416 ? - - - - - -
P-417 ? - - - - - -
P-418 ? - - - - - -
P-419 ? - - - - - -
P-420 ? - - - - - -
P-421 23-1248 Cox Klemin XA-1 - - - With 68 Svc Sqn crashed on takeoff at Ammans Crossing, TX Nov 18, 1929
P-422 25-292 ? Consolidated PT-1 Wright-Hisso E 180 - -
P-423 26-029 Dayton-Wright DH-4BK Liberty 12 400 - -
P-424 25-426 Douglas C-1A - - - -
P-425 30805 DH-4BP2 DH-4BP2 Liberty 12 400 - Transferred to Scott, IL 11/x/25
P-426 31858 Atlantic DH-4M2 Liberty 12A 420 -
P-427 31871 Atlantic DH-4M2 Liberty 12A 420 - Shipped to Fairfield, OH 2/25/27, ST 28156
P-428 31839 Atlantic DH-4M2P Liberty 12A 420 - -
P-429 23-672 Gallaudet DH-4B Liberty 12 400 - -
P-430 25-295 Boeing PW-9 Curtiss D-12 435 - -
P-431 25-420 Curtiss XP-2 Curtiss V-1400 500 - Turbocharger test bed. Converted from P-1, later back to P-1
P-432 25-405 Douglas O-7 Packard 1A-1500 - - Converted to O-2C. Shipped to Fairfield, OH 8/20/26, ST 25265
P-433 30479 Atlantic DH-4M2P Liberty 12A 420 - -
P-434 68572 Curtiss XNSB-4 2 x Liberty 12A 435 435 - -
P-435 62945 Atlantic DH-4M2S Liberty 12A 420 - Shipped to Fairfield, OH 1/27/27, ST 28020
P-436 31955 Atlantic DH-4M2S Liberty 12A 420 - -
P-437 25-325 Curtiss O-1 Curtiss D-12 435 - Shipped to Fairfield, OH 10/21/26, ST 25558, Converted to O-1 Special (VIP transport)
P-438 26-376 Huff-Daland LB-1 - - - Surveyed 8/7/26, #24307
P-439 25-435 Thomas-Morse XO-6 Liberty 12 400 -
P-440 25-334 Curtiss O-1 Curtiss D-12 435 - Shipped to Bolling, DC 9/7/26, ST 25406
P-441 25-350 Douglas O-2 Liberty 12 400 - Surveyed 9/16/26, #24330
P-442 A-7033 Vought UO-1 - - - (USN s/n)
P-443 26-205 Driggs-Johnson DJ-1 Bumblebee - - - -
P-444 26-296 Curtiss XAT-4 Wright Hispano - - -
P-445 26-374 Boeing AT-3 Wright V-720 180 - Converted from PW-9A . Shipped to Bolling, DC 8/9/26, ST 25199
P-446 25-324 Boeing XP-4 Packard 1A-1500 510 - Modified for high-altitude ops
P-447 26-206 Embry Riddle WAC - - - Also listed as Waco 9
P-448 25-409 Douglas O-9 Packard 1A-1500 - - -
P-449 25-333 Curtiss O-1A Liberty V-1650-1 420 - Shipped to Marshall, KS 12/6/26, ST 27271
P-450 26-379 Huff-Daland LB-1 - - - -
P-451 26-300 Curtiss XP-3A P&W R-1340-1 410 - Later converted to XP-21 and XP-21A
P-452 26-201 Huff-Daland XHB-1 - - - -
P-453 26-208 Huff-Daland XLB-5 - - - -
P-454 26-327 Consolidated PT-1 Wright-Hisso E 180 - -
P-455 26-408 Douglas O-2C Liberty 12 400 - -
P-456 25-436 Thomas-Morse XO-6 Liberty V-1650-1 435 - -
P-457 27-068 Curtiss P-1B Curtiss D-12C 435 - -
P-458 26-387 Douglas O-2C Liberty 12 400 - -
P-459 25-407 Douglas O-7 - - - -
P-460 27-082 Curtiss P-1B Curtiss D-12C 435 - Also shown as P-573
P-461 27-087 Curtiss P-1B Curtiss D-12C 435 - -
P-462 27-080 Curtiss P-1B Curtiss D-12C 435 - -
P-463 26-202 Fokker-Atlantic C-2 3 x Wright R-790 220 220 220 - Made first transpacific flight from Oakland, CA to Honolulu, HI
P-464 26-423 Douglas C-1C - - - -
P-465 25-353 Douglas O-2 Liberty 12 400 - -
P-466 26-418 Douglas O-2E Liberty 12 400 - -
P-467 26-406 Douglas O-2 Liberty 12 400 - -
P-468 - Douglas O-2C Liberty 12 400 - -
P-469 27-149 Consolidated XPT-2 Wright-Hisso E 180 - -
P-470 27-177 Consolidated XPT-3 Wright J-5C 220 - Converted to XPT-5, then to PT-3. Also P-501 and P-530
P-471 27-176 Consolidated NY-2 Wright J-5C 220 - Navy version of PT-1, Was diverted to USN
P-472 25-380 Douglas XA-2 Liberty V-1410 420 - Attack version of O-2
P-473 27-239 Curtiss AT-5 Wright V-720 180 - Trainer version of P-1 Hawk
P-474 ? - - - - - -
P-475 ? - - - - - -
P-476 25-328 Curtiss XO-11 Liberty V-1650 420 - Crashed 9 mi S of Columbus, OH 9/4/1929
P-477 26-211 Curtiss XB-2 2 x Curtiss V-1570-7 630 630 - Crashed 12/x/1927
P-478 - Curtiss O-11 Liberty V-1650 420 - -
P-479 ? - - - - - -
P-480 27-334 Keystone XB-1 2x Packard 2A-1500 510 - Contract #AC-935, 20-May-1926 at a cost of $85,000. Delivered Wright Field 26-Sep-1927, wrecked at Fairfield Depot 21-Jan-1928 due to engine fire. Repaired and converted to XB-1B 24-Oct, 1928. Surveyed 14-Sep-1929.
P-481 - Douglas O-2H Liberty V-1650-1 435 - -
P-482 27-288 Douglas XO-2H Liberty V-1650-1 435 - Used for photographic work, tested the Micarta tail wheel
P-483 26-203 Fokker-Atlantic C-2 Wright R-790A, 2 x Wright R-79 220 220 220 - Radio testing, A engine mount on fuselage front, B engines below wings, Converted to XC-2
P-484 - Curtiss O-1B Liberty V-1650 420 - -
P-485 ? - - - - - -
P-486 25-381 Douglas O-2B Liberty V-1650 400 - -
P-487 27-098 Curtiss O-11 Liberty V-1650 420 - Converted to XO-11, intended for National Guard service
P-488 26-295 Curtiss XP-6A Curtiss V-1570-17 600 - Won National Air Races 1927, surveyed 6/8/1928
P-489 25-332 Curtiss XO-13A Curtiss V-1570 720 - A converted O-1, NAR racer 1927 in the Liberty Engine Builders Trophy (finished 2nd), shipped to Bolling Field 7-Sep-1926, static test #25406, scrapped June 1928
P-490 ? - - - - - -
P-491 ? - - - - - -
P-492 - Douglas O-2B Liberty 12 400 - -
P-493 27-243 Curtiss A-3 Curtiss V-1150-3 435 - O-1B converted to A-3 and back to O-1B
P-494 25-423 Curtiss XP-6 Curtiss V-1570-1 600 - Originally P-1, used for racing, 2nd in 1927 NAR. Crashed 2/25/1929
P-495 25-331 Curtiss XO-13A Curtiss V-1570 720 - Originally 0-1, converted for racing. Crash landed Philips Field, Aberdeen Proving ground 10/21/1929
P-496 NX3698 Sikorsky S-37B - - - Evaluated and returned to manufacturer. Crashed at sea 1934
P-497 27-268 Curtiss O-1C Liberty V-1650 420 - O-1B converted to O-1C, VIP transport
P-498 27-333 Huff-Daland / Keystone XLB-3A 2 x P&W R-1340 410 410 - -
P-499 27-344 Keystone XLB-6 Wright R-1750 525 525 - LB-5 converted to XLB-6. Crashed Wright Field, OH 10/7/1929
P-500 27-244 Curtiss XA-4 P&W R-1340-1 410 - O-1B converted to XA-4. Surveyed 1932
P-501 27-177 Consolidated XPT-3 Wright J-5 220 - Converted to XPT-5 and eventually PT-3, P470, P530
P-502 27-327 Curtiss XP-5 Curtiss V-1150-3 - - P-5 converted to XP-5. Destroyed by fire 1/26/1929
P-503 25-440 Thomas-Morse XO-6B P&W R-1340 450 - -
P-504 - Boeing PW-9D Curtiss D-12 435 - -
P-505 28-73 Loening OA-1C - - - -
P-506 28-348 Ford Ford C-3 3 x Wright J-5 220 220 220 - Standard commercial 4-AT-B, NC3334
P-507 28-359 Boeing XP-8 Packard 2A-1500 600 - Cost $15,000, inverted engine, surveyed Wright Field June 1929
P-508 26-280 Curtiss XP-1A Curtiss D-12C 435 - -
P-509 26-208 Huff-Daland XLB-5 2 x Liberty V-1650-3 400 400 - Also P-453
P-510 28-229 Consolidated XO-17 Wright R-790-1 225 - -
P-511 27-246 Curtiss A-3 Curtiss D-12 (V-1150) 435 - W/o in landing accident at Port Columbus Airport, OH, 11/2/1929.
P-512 25-403 Douglas O-2A Liberty V-1650-1 435 - -
P-513 28-317 Consolidated XO-17A Wright J-5 220 - To civil registry as NX1558
P-514 26-420 Douglas O-2D Liberty V-1650-1 435 - -

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References

 

Last updated 13-May-2020