| Designation | Official, Popular Name(s) | Manufacturer | 1st Flight or Appearance | Role(s)/Notes |
NB Boeing 1925 USN biplane primary trainer
N2B Boeing 1930 USN/USMC trainer - competitor N2C/NK
N2C (A-3) Fledgling Curtiss 1928 USN/USMC biplane trainer
NE (L-4) Cub Piper 1942 USN/USMC L-4 trainer
HN (TW-5/ Huff-Dal. 1922 USN trainer TW-1/AT-1
AT-1)
NH (C-70) Nightingale Howard 1942 USN C-70 trainer
NJ (BT-9) North Amer. 1937 USN BT-9 trainer, staff/command transport
NK Keystone 1928 USN trainer - competitor N2B/N2C
NL $ Langley 1925 USN trainer with plastic fuselage
NM N.A.F. 1922 USMC all-metal Marine expeditionary aircraft
N2M Martin 1924 USN primary trainer
N2N N.A.F. 1923 USN general/gunnery trainer flying boat
N3N Yellow Peril N.A.F. 1941 USN/USMC trainer, glider tug
N5N N.A.F. 1914 USN primary trainer
NO Huff-Dal. 1923 trainer HO
NP Spartan 1941 USNR primary flight trainer
NQ (T-31) Fairchild 1945 USN T-31
NR Maxson 194? USN trainer
NR (PT-22) Recruit Ryan 1940 USN PT-22
NS (PT-13) Kaydet Stea.-Boe. 1940 USN PT-13
N2S Kaydet Stear.-Boe. 1930 USN/USMC modified NS - similar to PT-17
(PT-17)
N3S Kaydet Stearman 1943 USN trainer - modified N2S
NT New Stan. 1934 USN/USMC primary trainer
N2T Tutor Timm 1944 USN/USMC plywood trainer
NW Wright 1923 USN trainer/racer
NY (PT-3) Trusty Consolid. 1926 USN/USMC modified PT-3 biplane trainer
N2Y (PT-6) Consolid. 1929 USN trainer - trainer for airship parasite
N3Y Consolid. 1929 USN trainer - similar to NY - reengined
N4Y Consolid. 1932 USN/USCG PT-11
(PT-11)
N-1 N.A.F. 1918 1st USN aircraft designed for attack -flying
boat
N-8 Curtiss 1918 USN/USMC Curtiss-built JN-4
N-9 Curtiss 1918 USN/USMC Curtiss-built JN-4B flying boat
NBL-1 Barling Bomber Witteman- 1923 Night Bomber-Long distance - designed by Barling
Lewis
NBL-2 Martin 1920 proposed Night Bomber-Long distance
NBS-1 Mar.-Cur. 1920 Night Bomber-Short distance; redes. MB-2
NBS-2 L.W.F. 1923 proposed Night Bomber-Short distance based on H-1 Owl
NBS-3 Elias 1924 Night Bomber-Short distance , similar to NBS-1
NBS-4 Curtiss 1924 improved NBS-1
NC Nancy N.A.F. 1918 patrol/ASW flying boat
NO N.A.F. 1923 USN observation - N.A.F.-built M2O
NO-1 Douglas 1920 pusher-prop. night observation
NO-2 Douglas 1924 proposed night observation