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F - PHOTOGRAPHIC RECONNAISSANCE
[edit]FM - FIGHTER MULTIPLACE
[edit]- Curtiss O-1 Falcon
- XO-1: 23-1252
- O-1: 25-325/334
- O-1B: 27-243/287
- O-1E: 29-282/322
- O-1G: 31-472/501
- Douglas O-2
- XO-2: 23-1251, 23-1254
- O-2: 25-335/379
- O-2A: 25-387/404
- O-2B: 25-381/386
- O-2C: 26-1/14, 26-386/417
- O-2D: 26-419/420
- O-2E: 26-418
- O-2H: 27-288/297, 28-349/358, 29-158/163, 29-165/178, 29-342/351, 29-375/404
- O-2J: 28-188, 29-209
- O-2K: 29-179/183, 29-185/208, 29-210/217, 29-413/432
- XO-4: 23-1255
- O-5: 24-2/7
- O-6
- XO-6: 25-435/436
- O-6: 25-437/439
- XO-6B: 25-440
- O-8: 25-408
- O-9: 25-409
- Loening XO-10: 26-212
- Curtiss O-11 Falcon: 27-1/35, 27-98/107, 28-196/217
- Douglas XO-14: 28-194
- Keystone XO-15: 28-195
- Consolidated O-17 Courier
- XO-17: 28-229
- O-17: 28-360/385, 28-396/397, 30-89
- XO-17A: 28-317
- Thomas-Morse O-19
- XO-19: 28-400
- O-19: 28-401, 29-369
- O-19A: 29-370
- O-19B: 30-90/159
- O-19C: 31-278/348
- O-19E: 31-523/552
- Thomas-Morse XO-20: 28-402
- Thomas-Morse XO-21: 28-403
- Douglas O-22: 29-371/372
- Thomas-Morse YO-23: 29-352
- Douglas O-25
- O-25: 29-164
- O-25A: 30-160, 30-164/195, 30-354/370
- O-25B: 30-161/163
- O-25C: 32-181/210
- Fokker O-27
- XO-27: 29-327
- YO-27: 31-587/592
- Y1O-27: 31-598/603
- Vought XO-28: 29-323
- Douglas O-29: 29-184
- Curtiss XO-30: 29-451
- Douglas O-31
- XO-31: 30-229
- YO-31: 30-230
- YO-31A: 31-604/607
- YO-31B: 32-231
- YO-31C: 31-608
- Douglas O-32
- O-32: 29-218
- O-32A: 30-196/225
- Douglas YO-34: 29-373
- Douglas O-35
- XO-35: 30-227
- Y1O-35: 32-315/319
- Keystone-Loening XO-37: 30-396
- Douglas O-38
- O-38: 30-408/419, 31-349/379, 31-406/407
- O-38A: 30-407, 31-409/438
- O-38B: 32-102/116, 32-325/342, 32-394
- O-38D: 33-1
- O-38E: 33-2/16, 34-1/22
- O-38F: 33-322/329
- O-38S: 33-298/319
- Curtiss O-39 Falcon: 32-211/220
- Curtiss O-40 Raven
- YO-40: 32-343
- Y1O-40B: 32-415/418
- Douglas O-43
- Y1O-43: 32-291/295
- O-43A: 33-268/290
- Douglas O-46
- XO-46: 33-291
- O-46A: 35-161/231, 36-128/144, 36-147/148
- North American O-47
- XO-47: 36-145
- O-47A: 37-260/368, 38-271/325
- O-47B: 39-65/138
- Stinson O-49 Vigilant
- O-49: 40-192/291
- O-49A: 41-18900/19081
- Bellanca YO-50: 40-741/743
- Ryan YO-51 Dragonfly: 40-703/705
- Curtiss O-52 Owl: 40-2688/2890
- Douglas O-53: 41-3670/5158
- Stinson YO-54: 41-143/148
- Erco YO-55: 41-18875
- Lockheed O-56: 41-37470/87, 41-37488/38019
- Taylorcraft O-57 Grasshopper
- YO-57: 42-452/5
- O-57: 42-7773/92
- O-57A: 42-15073/158
- Aeronca O-58 Grasshopper
- YO-58: 42-456/9
- O-58A: 42-7793/7812
- O-58B: 42-14713/97
- Piper O-59 Grasshopper
- YO-59: 42-460/3
- O-59: 42-7813/52
- O-59A: 42-15159/329
- Kellett XO-60: 42-13604/10
- Pitcairn YO-61: 42-13611/6
- Stinson O-62 Sentinel (O-62-ST): 42-14798/15072
- Interstate XO-63 Grasshopper: 42-15895
OA - OBSERVATION AMPHIBIAN
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