page_title: Boeing P-12
section_title: Variants
hierarchical_section_title: Boeing P-12 / Variants
caption_attribution_description: English: 25th Bombardment Squadron Boeing P-12e France Field 1923
context_page_description: The Boeing P-12/F4B was an American pursuit aircraft that was operated by the United States Army Air Corps and United States Navy.
context_section_description: Model 83
  One prototype with spreader-bar landing gear and 425 hp Pratt & Whitney R-1340-8 engine, later designated XF4B-1 for Navy evaluation.
  Model 89
  One prototype with split-axle undercarriage and provision for a 500 lb bomb on ventral rack, later designated XF4B-1 for Navy evaluation.
  P-12
  Model 102, U.S. Army Air Corps version of the F4B-1 with a 450 hp R-1340-7 engine, nine built.
  XP-12A
  Model 101, 10th built P-12 with NACA cowl a 525 hp R-1340-9 engine and shorter undercarriage, one built.
  P-12B
  Model 102B, as P-12 with larger mainwheels and improvements tested on XP-12A, 90 built.
  P-12C
  Model 222, as P-12B with ring cowl and spreader-bar undercarriage, 96 built.
  P-12D
  Model 234, as P-12C with a 525 hp R-1340-17 engine, 35 built.
  P-12E
  Model 234, as P-12D with semi-monocoque metal fuselage, redesigned vertical tail surfaces, some were later fitted with tailwheels instead of skids, 110 built.
  P-12F
  Model 251, as P-12E with a 600 hp R-1340-19 engine, 25 built.
  XP-12G
  P-12B modified with a R-1340-15 engine with side-type supercharger, one converted.
  XP-12H
  P-12D modified with a GISR-1340E experimental engine, one converted.
  P-12J
  P-12E modified with a 575 hp R-1340-23 engine, and special bomb sight, one conversion.
  YP-12K
  P-12E and P-12J re-engined with a fuel injected SR-1340E engine, seven temporary conversions.
  XP-12L
  YP-12K temporary fitted with a F-2 supercharger, one converted.
  A-5
  designation for proposed use of P-12 as a radio-controlled target drone (cancelled)
  XF4B-1
  Designation given to two prototypes for Navy evaluation, the former Model 83 and the former Model 89.
  F4B-1
  Boeing Model 99 for the United States Navy, split-axle landing gear and ventral bomb rack, 27 built.
  F4B-1A
  One F4B-1 (BuNo A-8133) converted to unarmed executive transport for the Assistant Secretary of the Navy, fuel tank moved to upper wing centre section.
  F4B-2
  Boeing Model 223, spreader bar landing gear, frise ailerons, tailwheel replacing skid, 46 built.
  F4B-3
  Boeing Model 235, as F4B-2 but with semi-monocoque metal fuselage and equipment changes, 21 built.
  F4B-4
  Boeing Model 235, as F4B-3 but with redesigned vertical tail surfaces, 550 hp R-1340-16 engine, underwing racks for two 116 lb bombs, last 45 built had an enlarged headrest housing a life raft, 92 built and one built from spares.
  F4B-4A
  23 assorted P-12 aircraft transferred from USAAC for use as a radio-controlled target aircraft.
  Model 100
  Civil version of the F4B-1 with upper wing tank, four built.
  Model 100A
  Two-seat civil version for Howard Hughes, later converted to a single-seater, one built.
  Model 100D
  One Model 100 temporary used as a P-12 demonstrator.
  Model 100E
  Export version of the P-12E for the Siamese Air Force, two built, one later transferred to the Japanese Navy under the designation AXB.
  Model 100F
  One civil variant of the P-12F sold to Pratt & Whitney as an engine test bed.
  Model 218
  Prototype of the P-12E/F4B-3 variant, after evaluation sold to the Chinese Air Force.
  Model 256
  Export version of the F4B-4 for Brazilian Navy, 14 built.
  Model 267
  Export version for Brazil with an F4B-3 fuselage and P-12E wings, nine built.
  Aero-Tech of Hastings, Florida, built a 4/5-scale replica Boeing F4B-2/P-12C in 1978 powered by a 245hp Jacobs R-755-9.
caption: Boeing P-12E, trainer aircraft, 25th Bombardment Squadron, France Field, 1923
exif: {}