Boeing-Stearman Model 75

The Stearman (Boeing) Model 75 is a biplane formerly used as a military trainer aircraft, of which at least 10,626 were built in the United States during the 1930s and 1940s.[1] Stearman Aircraft became a subsidiary of Boeing in 1934. Widely known as the Stearman, Boeing Stearman or Kaydet, it served as a primary trainer for the United States Army Air Forces, the United States Navy (as the NS and N2S), and with the Royal Canadian Air Force as the Kaydet throughout World War II. After the conflict was over, thousands of surplus aircraft were sold on the civilian market. In the immediate postwar years they became popular as crop dusters, sports planes, and for aerobatic and wing walking use in air shows.

Model 75 (Stearman Kaydet)
Boeing Stearman N67193
Boeing Stearman N67193 in U.S. Navy markings
Role Biplane Trainer
Manufacturer Stearman Aircraft / Boeing
Introduction 1934
Number built 10,620+
Unit cost

Design and development

WAVE parachute rigger with N2S c1944
A WAVE in a Boeing Stearman N2S United States Navy training aircraft.
N2S-2 NAS Corpus Christi 1943
United States Navy N2S-2 at NAS Corpus Christi, 1943.
Boeing-Stearman NS-1-1936
United States Navy NS-1s of the NAS Pensacola Flight School, 1936.
Boeing Stearman E75 (PT-13D) of 1944.
Breitling N74189
Vintage Boeing-Stearman Model 75, Breitling SA
Boeing Stearman top view
Boeing Stearman (PT-13) of the Israeli Air Force.
N2S Kaydet ambulance 1942
United States Navy N2S ambulance at NAS Corpus Christi, 1942.
Stearman Modelo PT-17 en el IEHAP-Lima
Boeing Stearman PT-17, Museum of Historical Studies Institute of Aerospace in Perú - Lima.
16 19 061 PT17
PT-17 "Kaydet" on display at the Museum of Aviation, Robins AFB

The Kaydet was a conventional biplane of rugged construction with a large, fixed tailwheel undercarriage, and accommodation for the student and instructor in open cockpits in tandem. The radial engine was usually uncowled, although some Stearman operators choose to cowl the engine, most notably the Red Baron Stearman Squadron.

Operational history

Post-war usage

After World War II, thousands of surplus PT-17s were auctioned off to civilians and former military pilots. Many were modified for cropdusting use, with a hopper for pesticide or fertilizer fitted in place of the front cockpit. Additional equipment included pumps, spray bars, and nozzles mounted below the lower wings. A popular approved modification to increase the maximum takeoff weight and climb performance involved fitting a larger Pratt & Whitney R-985 Wasp Junior engine and a constant-speed propeller.

In popular culture

An iconic movie image is a Stearman cropduster chasing Cary Grant across a field in North by Northwest (the airplane that chased Grant was actually a Naval Aircraft Factory N3N Canary; the plane that hits the truck is a Stearman). Christopher Reeve and Scott Wilson are shown flying 1936 variants in the 1985 movie The Aviator.


Data from:United States Navy aircraft since 1911[2], Boeing aircraft since 1916[3] The U.S. Army Air Forces Kaydet had three different designations based on its power plant:

with a Lycoming R-680 engine. 2,141 total all models.[4]
PT-13 Initial production. R-680-B4B engine. 26 built.
PT-13A R-680-7 engine. 92 delivered 1937-38. Model A-75.
PT-13B R-680-11 engine. 255 delivered 1939-40.
PT-13C Six PT-13Bs modified for instrument flying.
PT-13D PT-13As equipped with the R-680-17 engine. 353 delivered. Model E-75.
With a Continental R-670-5 engine. 3,519 delivered
PT-17A 18 PT-17s were equipped with blind-flying instrumentation.
PT-17B Three PT-17s were equipped with agricultural spraying equipment for pest-control.
PT-13 with a Jacobs R-755 engine, 150 built.
PT-18A Six PT-18s fitted with blind-flying instrumentation.
Canadian PT-17. This designation was given to 300 aircraft supplied under Lend-Lease to the RCAF.

The U.S. Navy had several versions including:

Up to 61 delivered. powered by surplus 220 hp (164 kW) Wright J-5 Whirlwind.[5]
Known colloquially as the "Yellow Peril" from its overall-yellow paint scheme.
N2S-1 R-670-14 engine. 250 delivered to the U.S. Navy.
N2S-2 R-680-8 engine. 125 delivered to the U.S. Navy.
N2S-3 R-670-4 engine. 1,875 delivered to the U.S. Navy.
N2S-4 99 US Army aircraft diverted to the U.S. Navy, plus 577 new-build aircraft.
N2S-5 R-680-17 engine. 1,450 delivered to the U.S. Navy.
Stearman 70
Original prototype, powered by 215 hp (160 kW) Lycoming radial engine. Temporary designation XPT-943 for evaluation.[6]
Model 73
Initial production version. 61 built for U.S. Navy as NS plus export variants.[5]
Model 73L3
Version for Philippines, powered by 200 hp (150 kW) R-680-4 or R-680C1 engines. Seven built.[7]
Model A73B1
Seven aircraft for Cuban Air Force powered by 235 hp (175 kW) Wright R-790 Whirlwind. Delivered 1939–1940.[7]
Model A73L3
Improved version for Philippines. Three built.[8]
Stearman 75
(a.k.a. X75) Evaluated by the U.S. Army as a primary trainer. The X75L3 became the PT-13 prototype. Variants of the 75 formed the PT-17 family.
Stearman 76
Export trainer and armed versions of the 75.
Stearman 90 and 91
(a.k.a. X90 & X91) Productionized metal frame version, becoming the XBT-17.
Stearman XPT-943
The X70 evaluated at Wright Field.
American Airmotive NA-75
Single-seat agricultural conversion of Model 75, fitted with new, high-lift wings.[9]


Brazilian Air Force model A75L3 and 76.[13]
Royal Canadian Air Force received 301 PT-27s under Lend Lease.[14]
 Republic of China
Republic of China Air Force received 150 PT-17s under Lend-Lease,[15] and 104 refurbished aircraft post war in Taiwan. The ROCAF used them until 1958.[16]
Colombian Air Force[12]
 Dominican Republic
Imperial Iranian Air Force[17]
Israeli Air Force purchased 20 PT-17s.[18]
Mexican Air Force[17]
Nicaraguan Air Force
Paraguayan Air Force[12]
Peruvian Air Force
Philippine Army Air Corps[13]
Philippine Air Force[17]
 United States
United States Army Air Corps/United States Army Air Forces[13]
United States Marine Corps
United States Navy[13]
Venezuelan Air Force[13]
Yugoslav Air Force

Surviving aircraft

A considerable number of Stearmans remain in flying condition throughout the world, as the type remains a popular sport plane and warbird.

  • N2S-5 (BuNo. 61151) (ex-0308/1-E-57) is at the Argentine Naval Aviation Museum in flight condition.[11]
  • E75 (USAAF PT-13D 42-17456) owned and operated by Daniel Jones, Lacombe, Alberta. C-GVTI.
  • B75N1 (US Navy N2S-3, BuAer 05284) under restoration to fly with Daniel Jones, Lacombe, Alberta. C-GZAL.
  • Two PT-17s remain in active service for display (serials FAC-62 and FAC-1995).
  • One PT-17 in airworthy condition [19] registered as TF-KAU serial number T5-1556[20] MSN 41-7997[21]. Oldest airworthy aircraft in Iceland in May 2019. Originally brought to Iceland as air force trainer in 1941 by aircraft carrier USS Wasp [22] which was later sunk and discovered SE of Guadalcanal in 2019 [23].
New Zealand
  • PT-13D c/n 75-5064 Boeing-Stearman E75 Registered as ZK-BOE
  • PT-17 c/n 75-2055 Boeing-Stearman A75N1 Registered as ZK-BWR
  • PT-17 c/n 75-2100 Boeing-Stearman A75N1 Registered as ZK-KJO
  • PT-17 c/n 75-4245 Boeing-Stearman A75N1 Registered as ZK-PJS
  • PT-17 c/n 75-647 Boeing-Stearman A75N1 Registered as ZK-RJS
  • PT-17 c/n 75-2724 Boeing-Stearman A75N1 Registered as ZK-STM
  • PT-17 c/n 75-3132 Boeing-Stearman A75N1 Registered as ZK-TGA
  • N2S-3 c/n 75-8025A Boeing-Stearman B75N1 Registered as ZK-USA
  • PT-17 c/n 75-3655 Boeing-Stearman A75N1 Registered as ZK-USN
  • PT-13D c/n 75-5907 Boeing-Stearman E75 Registered as ZK-XAF
  • Three PT-17s are on display at the Air College.
  • PT-17 is on display at the Instituto de Estudios Históricos Aeroespaciales del Perú, Miraflores, Lima.
  • Two PT-17s, one of them airworthy and the other one being restored, are on display at Fundación Infante de Orleans (FIO) in Cuatro Vientos (Madrid) [24]
  • PT-13D (HB-RBG) belonging to the Stearman Club, built in 1943 and restored in 1990 after a crash due to an engine failure, is based at the Fliegermuseum Altenrhein [25]
United States

Specifications (PT-17)

Line drawings for the N2S/PT-13

Data from United States Military Aircraft since 1909[38][39]

General characteristics

  • Crew: 2
  • Length: 24 ft 9 in (7.54 m)
  • Wingspan: 32 ft 2 in (9.80 m)
  • Height: 9 ft 8 in (2.95 m)
  • Wing area: 27.7 sq ft (2.57 m2)
  • Empty weight: 1,931 lb (876 kg)
  • Max takeoff weight: 2,635 lb (1,195 kg)
  • Fuel capacity: 46 US gal (38 imp gal; 170 l)
  • Powerplant: 1 × Continental R-670-5 7-cylinder air-cooled radial piston engine, 220 hp (160 kW)
  • Propellers: 2-bladed fixed-pitch propeller


  • Maximum speed: 124 mph (200 km/h, 108 kn)
  • Cruise speed: 96 mph (154 km/h, 83 kn)
  • Service ceiling: 13,200 ft (4,000 m)
  • Time to altitude: 10,000 ft (3,000 m) in 17 minutes 18 seconds
  • Wing loading: 8.84 lb/sq ft (43.2 kg/m2)

See also

Aircraft of comparable role, configuration and era



  1. ^ National Museum of the United States Air Force gives the figure 10,346 but this includes the equivalent airframes in manufactured spare parts.
  2. ^ Bowers, Peter M.; Swanborough, Gordon (1990). United States Navy aircraft since 1911. Annapolis, Md.: Naval Institute Press. pp. 494–495. ISBN 0870217925.
  3. ^ Bowers, Peter M. (1989). Boeing aircraft since 1916 (3rd ed.). Annapolis: Naval Institute Press. pp. 251–269. ISBN 978-0870210372.
  4. ^ NMUSAF fact sheet: Stearman PT-13D Kaydet Archived August 1, 2010, at the Wayback Machine. Retrieved 18 May 2010.
  5. ^ a b Bowers 1989, pp.252-253.
  6. ^ Bowers 1989, pp. 251–252.
  7. ^ a b Bowers 1989, p. 253.
  8. ^ Bowers 1989, p. 254.
  9. ^ Taylor 1965, p. 178.
  10. ^ Bowers 1989, p. 268.
  11. ^ a b Núñez Padín, Jorge (2000). "BOEING STEARMAN N2S KAYDET". Fuerzas Navales (in Spanish). Jorge N. Padín. Retrieved 2014-05-16.
  12. ^ a b c d e f Andrade 1979, p. 159
  13. ^ a b c d e Andrade 1979, p. 158
  14. ^ Bowers 1989, p. 265.
  15. ^ Bowers 1989, p. 262.
  16. ^ Bowers 1989, pp. 260–261.
  17. ^ a b c d e "Boeing-Stearman Kadyet". Military Factory. 2013-06-20. Retrieved 2014-05-17.
  18. ^ Nordeen 1991, p. 27.
  19. ^ "Elsta flughæfa vélin á Íslandi". Retrieved 2019-04-25.
  20. ^ "Uppfletting í loftfaraskrá". Samgöngustofa (in Icelandic). Retrieved 2019-04-25.
  21. ^ "Crash site of war planes".
  22. ^ "Elsta flughæfa vélin á Íslandi". Retrieved 2019-04-25.
  23. ^ Caesar, Ed (2019-03-13). "The Epic Hunt for a Lost World War II Aircraft Carrier". The New York Times. ISSN 0362-4331. Retrieved 2019-04-25.
  24. ^
  25. ^ "FMA-Flyers".
  26. ^ Edwards, Owen (November 2011). "The Tuskegee Airmen Plane's Last Flight". Smithsonian Magazine. Retrieved January 30, 2012.
  27. ^ "Archived copy". Archived from the original on 2012-04-15. Retrieved 2011-10-20.CS1 maint: archived copy as title (link)
  28. ^ "Stearman PT-17 (Model 75) 'Kaydet'"
  29. ^ Hug, Robin. "New aviation company flying old planes". The Windsor Times. Retrieved 12 December 2015.
  30. ^ "Boeing PT-17 Kaydet". Vintage Flying Museum. Retrieved 25 April 2015.
  31. ^ United States Air Force Museum 1975, p. 21.
  32. ^
  33. ^ "2012 Annual Report" (PDF). Pacific Aviation Museum. Retrieved 25 April 2015.
  34. ^ Shupek, John. "Hawaii Aviation Museum Guide". Skytamer Images. Retrieved 25 April 2015.
  35. ^ "Restored Aircraft". Tri-State Warbird Museum. Retrieved 27 July 2014.
  36. ^ "Airframe Dossier - Stearman Kaydet, s/n 38278 USN, c/n 75-7899, c/r N224DF". Retrieved 25 April 2015.
  37. ^
  38. ^ Swanborough and Bowers 1963, p. 443.
  39. ^ "Boeing-Stearman Kaydet". Retrieved 23 May 2019.


  • Andrade, John. U.S.Military Aircraft Designations and Serials since 1909, Midland Counties Publications, 1979, ISBN 0 904597 22 9
  • Avis, Jim and Bowman, Martin. Stearman: A Pictorial History. Motorbooks, 1997. ISBN 0-7603-0479-3.
  • Bowers, Peter M. Boeing Aircraft since 1916. London:Putnam, 1989. ISBN 0-85177-804-6.
  • Nordeen, Lon. Fighters Over Israel. London: Guild Publishing, 1991.
  • Phillips, Edward H. Stearman Aircraft: A Detailed History . Specialty Press, 2006. ISBN 1-58007-087-6.
  • Swanborough, F.G. and Peter M. Bowers. United States Military Aircraft since 1909. London:Putnam, 1963.
  • Taylor, John W. R. Jane's All The World's Aircraft 1965–66. London: Sampson Low, Marston & Company, 1965.
  • United States Air Force Museum. Wright-Patterson AFB, Ohio: Air Force Museum Foundation. 1975.


  • Stearman, Lloyd. Stearmans, You Gotta Love Them. Lap Records, 2005. (NTSC Format)

External links

47th Bombardment Squadron

The 47th Bombardment Squadron is an inactive United States Air Force unit. Its last assignment was with the 41st Bombardment Group, based at Manila, Philippines. It was inactivated on 27 January 1946.


AeroSuperBatics Ltd is a British aerobatics and wingwalking team. As of 2011, they perform as the Breitling Wingwalkers, following a sponsorship agreement with the Swiss watch manufacturer Breitling. They previously performed as Team Guinot, the Utterly Butterly Wing-walking Display Team and the Crunchie Wing-walking Display Team according to their sponsors at the time.

AeroSuperBatics was founded in 1989 by Vic Norman, a veteran aerobatics pilot. It operates four Boeing-Stearman Model 75 biplanes and employs five pilots. The team's shows consist of two or four planes performing aerobatic manoeuvres while female athletes, attached to a post above the wings, engage in acrobatics.

CAF Utah Wing Museum

CAF Utah Wing Museum is one of many local detachments of the national Commemorative Air Force (CAF) non-profit aviation association dedicated to Honoring American Military Aviation through Flight, Exhibit and Remembrance.

The Museum is located at Russ McDonald Field, Utah, and contains artifacts and exhibits from World War II, Korean, and Vietnam wars. In addition they operate a N2S Stearman aircraft and two T-6 Advanced Trainer aircraft - part of the CAF's fleet of over 170 vintage warbirds - with rides available to the public. Exhibits and displays preserve stories of local characters that participated in aviation.

The Museum is closed, except by special arrangement, from October 31 to May 1 each year.

Canadian Museum of Flight

The Canadian Museum of Flight (formally the Canadian Museum of Flight Association since 1998) is an aviation museum at the Langley Regional Airport in Langley, British Columbia, Canada. The museum has over 25 civilian and military jets, piston driven engine aircraft, gliders, and helicopters on display, six of which have been restored to flying condition. Other displays include an aviation art gallery and aviation artifacts.

Continental R-670

The Continental R-670 (factory designation W670) was a seven-cylinder four-cycle radial aircraft engine produced by Continental displacing 668 cubic inches (11 litres) and a dry weight of 465 lb (211 kg). Horsepower varied from 210 to 240 at 2,200 rpm. The engine was the successor to Continental's first radial engine, the 170 hp Continental A-70. This engine was used on many aircraft in the 1930s and 1940s. The R-670 was widely used in the PT-17 Stearman primary training aircraft of the U.S. military.In addition to being used in aircraft, the R-670 was used in a number of light armored vehicles of World War II.

Eagles Mere Air Museum

Eagles Mere Air Museum is an aviation museum located on Merritt Field on the outskirts of Eagles Mere, Pennsylvania in North Central Pennsylvania. The museumhas 35 vintage aircraft from 1913 to 1944, as well as hundreds of other aviation related items pertaining to that era, including photos, engines and aircraft components.

Eddie August Schneider

Eddie August Henry Schneider (October 20, 1911 – December 23, 1940) was an American aviator who set three transcontinental airspeed records for pilots under the age of twenty-one in 1930. His plane was a Cessna Model AW with a Warner-Scarab engine, one of only 48 built, that he called "The Kangaroo". He set the east-to-west, then the west-to-east, and the combined round trip record. He was the youngest certificated pilot in the United States, and the youngest certified airplane mechanic. He was a pilot in the Spanish Civil War in the Yankee Squadron. He died in an airplane crash in 1940, while training another pilot, when a Boeing-Stearman Model 75 belonging to the United States Navy Reserve overtook him and clipped his plane's tail at Floyd Bennett Field.

Fighter World

Fighter World is an Australian aviation museum. Its purpose is to preserve the history of fighter operations of the Royal Australian Air Force (RAAF) and it has a large collection of aircraft, most of which are fighters once operated by the RAAF. It is located at RAAF Base Williamtown near Newcastle, New South Wales.

Florida Air Museum

The Florida Air Museum, formerly known as the International Sport Aviation Museum and the SUN 'n FUN Air Museum, is designated as Florida's "Official Aviation Museum and Education Center." It features a display of aircraft including one-of-a-kind designs, classics, ultra-lights, antiques and warbirds.

Iron Eagle on the Attack

Iron Eagle on the Attack (also known as Iron Eagle IV) is a 1995 direct-to-video aviation action film directed by Sidney J. Furie. The fourth instalment in the Iron Eagle series, it stars Louis Gossett Jr. reprising his role once again as retired Gen. Charles "Chappy" Sinclair. Doug Masters, the protagonist of the first film, returns, but is played by Jason Cadieux instead of Jason Gedrick. The film's opening scene is an alternate take on the scenario presented in Iron Eagle II, wherein Masters survived after being shot down in Soviet airspace.

Jacobs R-755

The Jacobs R-755 (company designation L-4) is a seven-cylinder, air-cooled, radial engine for aircraft manufactured in the United States by the Jacobs Aircraft Engine Company.

List of Israeli Air Force aircraft squadrons

This is a list of Israeli Air Force aircraft squadrons.

Lost Hills Airport

Lost Hills Airport (FAA LID: L84), also known as Lost Hills-Kern County Airport, is a public airport located one mile (1.6 km) northeast of the central business district (CBD) of Lost Hills, in Kern County, California, USA. The airport is mostly used for general aviation.

Poso Airport

Poso Airport (FAA LID: L73), also known as Poso-Kern County Airport, is a county-owned public-use airport located four nautical miles (7 km) east of the central business district of Famoso, in Kern County, California, United States. The airport is mostly used for general aviation.

Pueblo Weisbrod Aircraft Museum

The Pueblo Weisbrod Aircraft Museum is a non-profit aviation museum located in Southern Colorado. It was founded in the mid-1970s by former Pueblo City Manager Fred Weisbrod. The museum is made up of two hangars that were built in 2005 and 2011 respectively. The hangars house several of the museum's aircraft along with thousands of artifacts dating from World War One, all the way up to modern day. PWAM is also home to the International B-24 Memorial Museum and the Southern Colorado Space Museum and Learning Center. There are several historic military vehicles in the museum's collection, many of which are still in operational condition. The museum is located six miles east of Pueblo, Colorado on US Highway 50 at the Pueblo Memorial Airport, occupying space on what was the Pueblo Army Air Base during World War II. It is managed and maintained by the Pueblo Historical Aircraft Society.

The museum's collection includes around forty military and civilian aircraft, as well as several military vehicles. The museum also hosts periodic open cockpit days and fly ins at the neighboring Pueblo Memorial Airport. PWAM also houses an extensive collection of books and research material in the museum's library. The museum is run by a volunteer staff of men and women who provide tours, run the gift shop and do aircraft restoration and maintenance.

Wasco Airport

Wasco Airport (FAA LID: L19), also known as Wasco-Kern County Airport, is a public airport located two miles (3.2 km) northwest of Wasco, serving Kern County, California, USA. This general aviation airport covers 158 acres (64 ha) and has one runway.

Military designations
Boeing aircraft model numbers
Turbine engines
United States trainer aircraft designations, Army/Air Force and Tri-Service systems
Advanced Trainer
Basic Combat
Basic Trainer
Primary Trainer
Main sequence
Alternate sequences
USN/USMC trainer aircraft designations 1922-1948
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Naval Aircraft Factory
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