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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-501 28-218 Consolidated XPT-3 Wright R-790A 235 28-128 Perf. test 1/29. Slotted flaps removed, tested 2/29-5/29. Run & roll test 7/29. Musselman wheels 9/29. Active 10/29-7/30. Awaiting Wasp Jr. eng. 8/30-10/30. Transferred 2/31.
Wright R-790B 235 28-188
P-502 27-327 Curtiss XP-5 Curtiss D-12F 430 28-391 P-5 converted to XP-5. Perf. test 1/29. Destroyed by fire 1/26/29. Awaiting survey 2/29-3/29. Surveyed 3/29.
P-503 25-440 Thomas-Morse XO-6B P&W R-1340 450
P-504 27-202 Boeing PW-9D Curtiss D-12 435
P-505 28-73 Loening OA-1C Allison V-1650 435 28583 Active 1/29-3/29. Overhaul engine 4/29-6/29. Loaned to Scott Field 7/29. Awaiting transfer 9/29. Transferred 10/29.
P-506 28-348 Stout (Ford) C-3 Wright J-5AA Wright J-5C Wrigh 200 200 200 28-8 27-32 28-16 A commercial 4-AT-B, NC3334. Special transport 1/29-6/29. Awaiting transfer 7/29. Transferred 7/29.
P-507 28-359 Boeing XP-8 Packard 2A-1500 600 26-9 Cost $15,000, inverted engine. Awaiting decision on transfer/survey 4/29-5/29. Awaiting Survey 6/29-7/29. Surveyed Wright Field 7-8/29.
P-508 26-280 Curtiss P-1A Curtis D-12D Curtiss D-12E 430 430 27-147 29-461 Active 1/29-3/29. Installed 430hp D12E 3/29. Machine gun & Bombing Range 4/29. Cracked aviation gas 5/29-9/29, Radio-generator tests 10/29-6/30.
XP-1A Curtis D-12D Curtiss D-12E 430 430 27-147 29-461 Designated XP-1A 12/29. Awaiting Survey 7/30-8/30. Surveyed 8/30.
P-509 28-2 Keystone XLB-5A 2 x Liberty 12 400 400 4654XYG 28224YG Delivered to Wright Field 2/10/28. Automatic release handle 1/29-9/29. Awaiting transfer to FAID for wing repair 10/29. Transferred 10/29.
P-510 28-229 Consolidated XO-17 Wright R-790-B 235 28-258 Converted PT-3. Active 1/29-7/30. Waiting for Wasp Jr. 8/30-10/30 (not installed). Active 11/30-1/31. Awaiting transfer 2/31-3/31. Transferred 3/31.
P-511 27-246 Curtiss XA-3 Curtiss D-12E 430 27-361 Synchronizer test 1/29-3/29. Gunnery 4/29-5/29. Armament test 6/29-9/29. Holt Flare 9/10-9/11. Wiped out in landing accident, Port Columbus Airport, OH, 11/2/1929.
P-512 25-403 Douglas O-2A Liberty V-1650-1 400 77768YG Incidental 1/29-7/29. Transferred 7-8/29.
P-513 28-317 Consolidated XO-17A Wright J-5C 200 27-31 Incidental 1/29-5/29.
Wright R-790B 235 28-217 R-790B installed 5/29. Incidental 5/29-3/30.
XPT-8 Packard DR-980 225 30-431 Packard DR-980 diesel installed 4/30 and plane re-designated XPT-8. Performance test 4/30-9/30. Returned to Packard factory 11/30-12/30. Incidental 1/31-9/31. Transferred to Brooks 9/31.
P-514 26-420 Douglas O-2D Liberty V-1650-1 400 28794 Air-cooled stacks 1/29-3/29. Transferred 3/29. Transported to Kelly Field.
P-515 27-263 Curtiss XO-18 Liberty V-1650-1 420 With CurtissV-1150-1 435hp engine, converted to XO-18 with Curtiss 600hpH-1640-1 eng., & then back to an O-1B.
P-516 28-40 Boeing PW-9D Curtiss D-12D 430 27-441 Perf. test 1/29. Incidental 2/39-10/29. Awaiting survey 11/29. In storage at FAD to be given to a university 2/30. Transferred 2/30.
P-517 28-42 Curtiss AT-5A/AT-5 Wright J-5BA 200 28-176 Intake stacks 1/29-7/29. Designated AT-5 12/29. Active 1/30. No engine 2/30-3/30.
P-1F Curtiss V-1150E 430 25-112 Converted to P-1F with Curtiss V-1150E 4/30. Incidental 5/30-1/31. Transferred 1/31.
P-518 27-102? Curtiss O-11 Liberty V-1650 420
P-519 23-1251 Douglas XO-2 Liberty 12A 400 32444YG Aerodynamic test 1/29-4/29. Incidental 5/29-9/29. Being surveyed 10/29-11/29. Surveyed 11/29.
P-520 28-41 Boeing XP-7 Curtiss V-1570 27-50 Incidental (Armament) 1/29-3/29. Transferred 3/29.
P-521 25-383 Douglas O-2B Liberty 12A 400 28872YG Incidental (1/29-11/29. Transferred 11/29.
P-522 28-119 Atlantic C-2A Wright J-5BA 225 28-237 28-238 28-241 Navigational School 2/19-4/29. Special transport 5/29. Performance test 6/29. Navigational school 7/29-11/29. No engines 12/29-1/2/30.
C-7 Wright R-975 (J-6) 300 29-785 29-784 29-757 J-6s replaced J-5BAs, plane designation changed to C-7 1/30. Incidental 2/30-5/30. Radio 6/30. Transferred 6/30.
P-523 27-71 Curtiss XP-1B Curtiss D-12D 430 27-152 Skin type radiator 2/29-4/29. High temp cooling 5/29-7/29. At FAD for overhaul 11/29-12/29. Power Plant tests 1/30-12/30. Heinrich radiator 4/31-6/31.
P-524 28-189 Curtiss XP-3A P&W R-1340-1 410 27-468 NACA cowling tests 1/29-8/29. High speed & climb 9/29-8/31. Raced in 1929 NAR.
XP-21 P&W R-985 300 30-941 Converted to XP-21 in 11/30 by installing 300hp P & W R-985. Transferred 5/31.
P-525 619 Douglas O-2C Liberty V-1650-1 435 28982YG Oleo landing gear 1/29-3/29. Incidental, 6/29. Awaiting survey 7/29-11/29. Being surveyed, awaiting L.C. 2/30. Transferred 2/30.
P-526 26-296 Curtiss P-1A Curtiss D-12C 430 25-109 The former P-444 after installation of a Curtiss D-12C engine. Later had 430hp V-1150E s/n 29-457. In Armament Branch, some machine gun practice 4/29-6/29. Cracked aviation gas test 7/29. In Armament Branch 7/29-1/30. Active 2/30-7/30. Transferred about 8/30.
P-527 29-38 Consolidated PT-3A Wright J-5 220 26-819 Perf. test 1/29. Incidental 2/29-4/29. Transferred 4/29.
P-528 28-293 Consolidated XPT-4 Carminez 447-C Mfr. 450 Perf. test 1/29-3/29. Transferred 3/29.
P-529 29-179 Douglas O-2K Liberty 12A 400 77357 Perf. test 1/29. At Douglas plant 4/29. Held as special ship 6/29-8/29. On loan to Bolling 9/29-12/29. Transferred to FAID (awaiting L.C.) 3/30.
BT-1 Liberty (V-1650A) 400 17577YG Re-designated BT-1 4/30. Incidental 5/30-2/31. Variable pitch prop 3/30. Transferred 8/30.
P-530 27-177 Consolidated XPT-5 Curtiss R-600 175 29-282 Converted from XPT-3 with eng. change ca. 12/28.. Perf. test 1/29-3/29. Transferred 3/29.
P-531 28-195 Keystone XO-15 Wright R-790-B 28-246 Perf. test 4/29. Incidental 5/29. Awaiting transfer 6/29-7/29. Transferred ca. 8/29.
P-532 27-276 Curtiss O-1B (Spec.) Curtiss D-12E 435 28-376 Perf. test 5/29. Incidental 6/29-7/29. Transferred 8/29. Returned to McCook 1/30. Incidental 2/30. Surveyed, destroyed by fire 3/18/30.
P-533 25-362 Douglas O-2 Liberty V-1650A 400 25840YG Incidental 1/29-2/30. Awaiting transfer to Kelly Field 2/30. Not listed 3/30.
P-534 25-407 Douglas O-2 Liberty V-1650A 400 33334YG Incidental 1/29-2/30. Awaiting Transfer to Kelly Field 3/30. Surveyed - destroyed by fire 3/18/30.
P-535 29-158 Douglas O-2H Liberty V-1650A 400 26735YG Performance test 1/29-3/29. 7/29 Gen. Foulois. Bendix wheel and brakes testing 10/29-12/29. Landing lights 1/30-4/30, listed as XO-2H. Transferred to FAD for overhaul 5/30.
P-536 29-161 Douglas O-2H Liberty 12A 400 27583YG Incidental 1/29-1/30. Enclosed tail skid spring 2/30-4/30. Landing lights 7/30-11/30. Awaiting transfer 2/31. Transferred 2/31.
P-537 29-227 Curtiss P-1C Curtiss D-12E 430 29-401 Perf. test 2/29-5/29. High temp. cooling 6/29-8-29. Waiting survey 9/29-11/29. Survey 11/29.
P-538 29-164 Douglas O-2H Liberty 12A 400 28808FG Incidental 2/29-5/29. At Douglas Plant to convert to O-25 5/29. Conversion completed 8/29 and plane re-designated O-25 P-560 8/29.
P-539 28-194 Douglas XO-14 Wright R-790-B 220 28-250 Perf. test 4/29. Armament test 5/29. Awaiting transfer 6/29-7/29. Transferred 7-9/29.
P-540 28-388 Keystone LB-7 P&W R-1690 525 525 28-462 28-468 Delivered to Wright field 2/9/29. Perf. test 4/29. To be transferred to P&W for installation of R-1860 engs. 5/29. Converted to LB-12 with 2ea. P&W R1690 engs. & assigned P-555.
LB-12 P&W R-1690 525 525 Converted to LB-12 with 2ea. P&W R1690 engs. & assigned P-555.
P-541 Never on Wright Field records.
P-542 27-330 Curtiss P-5 Curtiss D12F 435 27-371 Turbo-supercharged. Perf. test 5/29-12/29. Transferred 8/29.
P-543 28-401 Thomas-Morse O-19 P&W R-1340 500 27-459 Perf. test 4/29. Armament test 5/29-6/29. Perf. test 7/29.
P&W R-1340C 29-328 Experimental engine R-1340C installed 8/29 “for AC2622.” Transferred 9/29.
P&W SR-1340C 450 29-328 Incidental with SR-1340C 5/30-7/30. Transferred 7/30.
P-544 29-354 Boeing XP-12 P&W R-1340C 410 29-298 P-12 re-designated XP-12. Perf. test 5/29-9/29.
P&W R-1340 450 29-313 Eng. s/n 29-313 installed 10/29, initial flight test 10/29-4/30.
P&W SR1340C 450 29-857 450 hp P&W SR1340D installed 5/30. Clothing & oxygen equipment 6/30-5/31. SR1340C eng. installed 6/31, High Alt. Equip. & Radio. Transferred 7/31.
P-545 28-126 Fokker Atlantic XC-2A 3 x Wright R-975A 300 300 300 29-675 29-676 20-677 To be designated XC-2B 4/29.
C-7 Designated C-7, 5/29. Performance test 5/29-7/29.
XC-7A Designation changed to XC-7 7/29. Awaiting transfer 9/29-11/1/29. Transferred 11/29.
P-546 29-362 Boeing XP-12A P&W R-1340 450 29-304 Destroyed mid-air collision with another P-12 5/19/29, 4 total hours flying time. Awaiting survey, crashed 6/29. Awaiting survey 7/29. Surveyed 7-8/29.
P-547 29-323 Vought O-28 P&W R-1340C 450 29-321 Perf. test 6/29-7/29. Experimental Eng. breather 10/29-3/30. Surveyed -destroyed by fire 3/18/30.
P-548 29-235 Fairchild XC-8 P&W R-1340C 450 29-707 Photography work 6/29-5/30
XF-1 P&W SR-1340C 450 29-857 Engine changed to SR-1340C & plane re-designated XF-1 4/30. Crashed 5/20/30. Awaiting Survey at MAD 6-7/30, engine at FAID.
P-549 ?
P-550 27-189 Boeing PW-9C Curtiss D-12D 435 26-787 Incidental 7/29-5/30. Transferred 5/30.
P-551 25-405 Douglas O-2C Liberty 12 400 44690YG Incidental 7/29-10/29. Transferred 10/29.
P-552 28-398 Curtiss B-2 2 x Curtiss GV-1570-7 600 600 28-496 28-497 Initial flight test at Langley 7/29. Exhaust manifold at McCook 9/29. Awaiting transfer on receipt of 3-blade props 10/29. Surveyed March Field, Cailf., 3-Oct-1934 for FWT. Was used in the Western Zone during Air Mail crises, assigned to 11th Bombardment SQ, March Field.
P-553 26-420 Douglas O-2D Liberty V-1650A 400 26219YG Incidental 7/29-2/30. Awaiting transfer to Kelly Field 3/30. With air-cooled stakes, transported to Kelly Field 3/30.
P-554 29-220 Stout (Ford) C-9 3 x Wright R-975-A 300 300 300 29-683 29-686 29-691 Perf. test 7/29. Automatic control 11/29. Equipment test 12/29. Navigation equipment 2/30. Transferred 2/30.
P-555 28-388 Keystone LB-12 2 x P&W R-1690 575 575 29-29 29-30 Converted from LB-7 P-540 to LB-12 at P&W 27/6/29. Perf. test 7/29. Wrecked Osborn OH 8/30/29. Awaiting survey 9/29-11/29. Surveyed 11/29.
P-556 ? O-2H?
P-557 ?
P-558 27-267 Curtiss O-1C Curtiss D-12D 430 27-315 Major Gen. Foulois aircraft 9/29-3/30. Destroyed by fire 3/18/30.
P-559 29-453 Thomas-Morse XP-13 Curtiss H-1640 600 28-401 XP-13 perf. test 9/29-4/30. Eng. in Power Plant 5/30-6/30. P&W SR-1340C installed & plane re-designated XP-13A 6/30. Perf. Test 9/30. Awaiting survey 11/30. Surveyed 11/30.
XP-13A Curtiss SR-1640C 450 29-310
P-559 29-453 Thomas-Morse XP-13 Curtiss H-1640 600 28-401 XP-13 perf. test 9/29-4/30. Eng. in Power Plant 5/30-6/30.
XP-13A Curtiss SR-1640C 450 29-310 P&W SR-1340C installed & plane re-designated XP-13A 6/30. Perf. Test 9/30. Awaiting survey 11/30. Surveyed 11/30.
P-560 29-164 Douglas O-25 Curtiss GV-1570 600 28-490 Former P-538 after conversion to O-25 8/29. Perf. Test 9/29. Prestone cooling 10/29-11/29.
XO-25A Curtisss GIV-1570 600 28-491 At Douglas factory 12/29; converted to XO-25A with GIV-1570. Double voltage generator 1/30-4/31.
Curtiss GIV-1579C 600 30-949 Equipped with GIV-1570C engine 6/31. Heinrich radiator 11/31-12/31.
P-561 28-402 Thomas-Morse YO-20 P&W R-1690-1 525
P-562 29-352 Thomas-Morse YO-23 Curtiss V-1570 600 29-159 Assigned Gen. Foulois 5/30. Incidental 6/30-3/31. Awaiting Transfer 4/31. Transferred 4/31.
P-563 29-27 Keystone LB-10 Wright R-1750B 525 29-81 Delivered to Wright Field 7/16/29. Perf. test 9/29. Awaiting transfer 10/29. Transferred 10/29. Wrecked Pan American airport, Miami FL 11/12/29. Converted to XLB-10.
Wright R-1750B 525 29-82
P-564 29-115 Consolidated PT-3A Wright R-790B 235 28-261 Incidental 9/29-5/30. Transferred 5/30.
P-565 29-12 Keystone LB-6 2 x Wright R-1750B 525 525 29-75 29-80 Delivered to Wright Field 7/16/29. Performance test at McCook 9/29-12/29. Power Plant test 1/30-8/30. Performance 9/30-11/30. Awaiting transfer 12/30. Transferred 12/30.
P-566 26-212 Loening XO-10 Wright V-1460 480 28-504 Perf. test 9/29-11/29. Awaiting transfer to factory; development V-1460 engine 12/29. Transferred 1/30.
P-567 30-88 Fleet XPT-6 Kenner K-5 100 30-29 Initial fight test 9/29. Incidental 10/29. Transferred 10/29.
P-568 29-218 Douglas O-32 P&W R-1340B 450 29-295 Converted from O-2K 1930. Perf. test 9/30. Assigned to Maj. Fickel 9/29-4/30. Transferred 4/30. Converted to BT-2 1930.
P-569 29-370 Thomas-Morse O-19A P&W SR-1340C 450 29-323 Armament changes 9/29. Transfer to Thomas Morse factory 10/29. Incidental 4/30-7/30. Transferred 7/30.
P-570 25-292 Consolidated PT-1 Wright E 180 49362 (McCook Airplane Records beginning Jan. 1930 mis-identify it as an XPT-1.) Parachute Project 9/29-7/31. Transferred 7/31.
P-571 29-224 Stout (Ford) C-9 3x Wright R-975A 300 300 300 29-688 29-705 29-696 Assigned to Navigation School 9/29-11/29. On loan to Bolling Field 12/29. Transferred to Selfridge Field 1/31.
P-572 27-73 Curtiss P-1B/XP-1B Curtiss D-12E 430 29-412 Wing guns 9/29-10/29 & 3/30-4/30. Wing guns, designation changed to XP-1B 11/29. Transferred 4/30.
P-573 27-82 Curtiss P-1B Curtiss D-12D 430 27-156 Former P-460 re-designated P-573 in 1929. Incidental 10/29-6/30.
Curtiss D-12E 430 29-479 Engine changed to D-12E 6/30. Incidental 7/30-8/30.
Curtiss D-12D 430 Engine changed to D12D. Incidental 9/30-12/30.
P-574 26-288 Curtiss P-1A Curtiss D-12D 430 26-795 Incidental 10/20-11/29. Transferred 12/29-2/30. Incidental 3/30-7/30. D-12E (V-1150E) installed 7/30. Incidental 8/30-11/30. To be transferred to FAD for overhaul 12/30. Transferred 12/30.
Curtiss D-12E 430 27-315
P-575 28-403 Thomas-Morse XO-21 Curtiss H-1640 600 28-405 Perf. test awaiting engine 10/29-1/30. Perf. test 2/30-6/30. R-1750C installed 6/30, re-designated XO-21A.
XO-21A Wright R-1750C 525 29-41 R-1750C installed 6/30, re-designated XO-21A.
XO-21A Wright R-1750E 525 30-130 R-1750E installed 8/30. Assigned Materiel /Div. 9/30-11/30. Dispose of 7/31.
P-576 29-184 Douglas O-29 P&W R1690 525 28-485 Perf. test 10/29-11/29. R-1820E installed & designation changed to Y1O-29A 9/30.
Y1O-29 Wright R1750B 525 29-95 Incidental 12/29-12/31 with following changes. Wright R-1750B installed 12/29. Designation changed to Y1O-29 5/30. Awaiting transfer to FAD for overhaul 7/30. Without engine 8/30-10/30.
Y1O-29A Wright R1820E 575 31-746 R1820E removed & installed in B-3A 1/31; P-577 engineless 2/31-3/31. Wright R1820E installed 5/31.
O-29A Re-designated O-29A 8/31. Engine sent to FAD 12/31.
P-577 29-371 Douglas O-22, XO-22 P&W R-1340C 450 29-370 O-22 perf. test 10/29-2/30. Designated XO-22 & engine s/n 29-327designated SR-1340C 2/30.
XYO-22 P&W SR-1340C 450 30-70 Designated XYO-22 4/30-8/31. Engine returned to R-1340C s/n 30-54 in 9/31. Radio Equipment test 3/30-12/31. Listed as XO-22 9/31-12/31.
P-578 29-452 Curtiss XC-10 Warner R-420-1 110 29-334 Curtiss Robin. Aerial torpedo 3/30-12/31. Used for radio control a/c test program.
P-579 29-238 Curtiss P-1C/ XP-1C Curtiss D-12D 430 28-323 Prestone cooling 11/29-6/31. Re-designated XP-1C 11/29 to 5/31.
Curtiss D-12E 430 27-357 D-12E installed 1/30.
P-1C Curtiss D-12E 430 27-357 Re-designated P-1C 5-6/30. Transferred 6/30.
P-580 29-260 Curtiss XP-6 Curtiss V-1570-17 600 29-155 XP-6 perf. test 11/29-10/30.
XP-6A Curtiss V-1570A 600 29-158 Converted to XP-6A with V-1570A 11/30. F-2 supercharger installed 3/31-4/31.
XP-6D Curtiss V-1570C 600 30-972 V-1570C engine with F-2A side-type supercharger installed 5/31 & plane re-designated XP-6D. Testing 5/31-12/31.
P-581 28-160 Douglas O-2H Liberty 400 90703YG Incidental 1/29-6/30. Surveyed 6/30.
P-582 29-29 Curtiss XB-2 2 x Curtiss GV-1570 630 630 28-494 28-495 A production B-2 of 1929 identified in McCook records as the XB-2. Eng. s/n’s vary. Perf. test 11/29-3/30. Armament, Electrical conduits 6/30-4/31. Armament, L-1 & C-4 bombsights 5/31-8/31. Not listed 9/31-10/31. Automatic pilot test 11/31-12/31.
P-583 28-216 Curtiss O-11 Liberty V-1650A 400 26568YG Incidental 12/29-6/30. Intended for National Guard.
P-584 29-9 Keystone XLB-8 2 x P&W GR-1860 575 575 29-32 29-33 Seventeenth LB-7 with geared engine. Delivered to Wright Field 11/6/29 & converted to XLB-8 12/11/29. Perf. test 12/29-2/30. Vibration Investigation 3/30-4/30. Perf. test 5/30-10/30. Parachutes 11/30-3/31. Destroyed Wright Field 3/18/31. Surveyed 4/31
P-585 28-200 Curtiss O-11 Liberty V-1650B 400 23-472YG Incidental 12/29-6/30. Surveyed 6/30. Intended for National Guard service
P-586 29-263 Curtiss XP-6 Curtiss V-1570 600 29-166 Was a P-1A with XPW-8A wings for a race project. In Power Plant area 1/30-11/30. V-1570A installed 10/30. Converted to P-6A 11/30. Transferred 2/31.
P-6A Curtiss V-1570A 600 29-156
P-587 29-282 Curtiss O-1E Curtiss V1159E 430 29-708 Initial flight test 2/30. Incidental 3/30. Destroyed by fire 3/18/30.
P-588 29-406 Sikorsky C-6 2 x P&W R-1340C 450 450 29-336 29-337 McCook records list it as XC-6, Baugher shows as XC-6 redesignated as C-6. Performance test 2/30. Destroyed by fire 3/18/30. Surveyed.
P-589 30-421 Consolidated XNY-2 Wright R-975 300 30-1104 A Navy plane. “Guggenheim.” Assigned to Fog Flying 2/30-4/31. Transferred 4/31. (An incorrect unofficial list says it was a Navy XN3Y-1 s/n 8273. XN3Y-1 was actually s/n 8283.)
P-590 29-259 Curtiss XP-6B Curtiss V-1570 600 29-186 Incidental 2/30-10/30. Long-range fuel tanks (250-gal). Transferred 10/30.
P-591 30-196 Douglas O-32A P&W R-1340C 450 29-809 Perf. test 3/30. Incidental 4/30-6/30.
BT-2A Designation changed from O-32A to BT-2A 3/30. Assigned to Lt. Col. Fickel 7/30-8/30 & to Chief Materiel Div. 9/30-10/30. Incidental 11/30-12/31.
P&W R-1340D 450 31-647 Engine changed to R-1340D 8/31.
P-592 29-329 Boeing P-12B P&W SR-1340C 450 29-823 Perf. test 3/30-4/30. Incidental 5/30-6/30. Dicks steel prop 7/30.
XP-12B P&W SR-1340E 500 30-838 SR-1349E installed 7/30. Ski installation 9/30. Designation changed to P-12B 10/30. Incidental 10/30-2/31.
XP-12D P&W SR-1340E 500 30-838 Designation changed from P-12B to P-12D 3/31. Vapor lock investigation 3/31-6/31.
XP-12B P&W R-1340D 450 31-1099 Supercharged 450hp R-1340D installed 9/31 & plane re-designated XP-12B; engine test 9/31-12/31.
XP-12G P&W Y1SR-1340G Converted to XP-12G, also tested with P&W Y1SR-1340G, both with turbosupercharger and ring cowling; converted back to P-12B after testing.
P-593 29-373 Douglas XO-34 Curtiss GIV-1570 600 28-492 Third O-22, with geared engine. Perf. test 4/30. Assigned to Armament, engine in Power Plant 5/30-11/30.
XYO-34 Curtiss GIV-1570 600 30-291 Engine changed to s/n 30-291 & designation changed to XYO-34 9/30. Armament 12/30. No engine, awaiting disposition 1/31.
P-594 ?
P-595 30-001 Curtiss A-3B Curtiss V-1150E 430 30-1 Assigned to Wright field 2/24/30. Perf. test 4/30. Assigned to Gen. Foulois 5/30-7/30, to Gen. Pratt 8/30, & to Chief, Materiel Div. 9/30. Designated O-1F 7/30. Active 10/30-12/30. Transferred 1/31. Converted to O-1E. Surveyed at Wright School, Buffalo, N.Y. 2/25/38.
P-596 27-277 Curtiss O-1B Curtiss V-1150D 430 27-125 Incidental 4/30.
Curtiss V-1150E 430 29-401 V-1150E installed 4/30. Transferred to MAD 4/30.
P-597 29-407 Fokker XC-7A 3x Wright R-975A 300 300 300 29-748 29-749 290-750 Incidental 5/30-7/30. Transferred 7/30.
P-598 30-91 Thomas-Morse XO-19B P&W R-1340C 450 30-188 Perf. test 4/1/30-6/30. Transferred 6/30.
P-599 30-371 Mohawk XPT-7 Kinner K-5 90 30-433 Perf. test 4/30-5/30. Aerodynamics testing 6/30-8/30. Transferred 8/30. 1933 Performance test, findings were a/c didn’t meet Air Corps/Dept of Commerce standards; a/c was subsequently used in 1932/33 for additional testing as low-wing monoplane and air-metering shock struts.
P-598 30-91 Thomas-Morse XO-19B P&W R-1340C 450 30-188 Perf. test 4/1/30-6/30. Transferred 6/30.
P-599 30-371 Mohawk XPT-7 Kinner K-5 90 30-433 Perf. test 4/30-5/30. Aerodynamics testing 6/30-8/30. Transferred 8/30. 1933 Performance test, findings were a/c didn’t meet Air Corps/Dept of Commerce standards; a/c was subsequently used in 1932/33 for additional testing as low-wing monoplane and air-metering shock struts.

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References

 

Last updated 13-May-2020