Military Factory logo
Icon of a dollar sign
Icon of military officer saluting
Icon of F-15 Eagle military combat fighter aircraft
Icon of Abrams Main Battle Tank
Icon of AK-47 assault rifle
Icon of navy warships

Boeing-Stearman Kaydet

Biplane Trainer / Aerobatic Aircraft

Boeing-Stearman Kaydet

Biplane Trainer / Aerobatic Aircraft

OVERVIEW
SPECIFICATIONS
ARMAMENT
VARIANTS
HISTORY
MEDIA
OVERVIEW



The Boeing-Stearman Kaydet trainer is now a much-loved collectors item for private aircraft owners.
National Flag Graphic
ORIGIN: United States
YEAR: 1941
STATUS: Retired, Out-of-Service
MANUFACTURER(S): Boeing-Stearman - USA
PRODUCTION: 9,800
OPERATORS: Argentina; Bolivia; Brazil; Canada; China; Colombia; Cuba; Dominican Republic; Greece; Guatemala; Honduras; Iran; Israel; Mexico; Philippines; United States; Venezuela
SPECIFICATIONS



Unless otherwise noted the presented statistics below pertain to the Boeing-Stearman Kaydet model. Common measurements, and their respective conversions, are shown when possible.
CREW: 1 or 2
LENGTH: 25.03 feet (7.63 meters)
WIDTH: 32.15 feet (9.8 meters)
HEIGHT: 9.15 feet (2.79 meters)
WEIGHT (EMPTY): 1,936 pounds (878 kilograms)
WEIGHT (MTOW): 2,716 pounds (1,232 kilograms)
ENGINE: 1 x Continental R-670-5 Seven-cylinder radial developing 220 horsepower.
SPEED (MAX): 124 miles-per-hour (199 kilometers-per-hour; 107 knots)
RANGE: 505 miles (812 kilometers; 438 nautical miles)
CEILING: 11,204 feet (3,415 meters; 2.12 miles)




ARMAMENT



None.
VARIANTS



Series Model Variants
• X-70 - Original Stearman Prototype Model
• Model 75 - Stearman Developed X-70; Became Boeing product through acquisition of the Stearman company.
• NS-1 - US Navy Designation of the Model 73 production models; 61 examples delivered.
• PT-13 - US Army Model Designation fitted with Lycoming R-680-5 radial 215hp piston engine; 26 examples delivered.
• PT-13A - Further development of the PT-13; fitted with R-680-7 engine of 220hp; 92 examples produced.
• PT-13B - Fitted with R-680-11 powerplant; 255 examples delivered.
• PT-13C - Night Flying Conversion Models; 6 examples produced in this fashion.
• PT-13D - "Common" US Army and Navy Production Model.
• PT-17 - Fitted with Continental R-670-5 radial; 3,510 produced.
• PT-17A - "Blind Flying" Variant with specialized instrumentation; 18 such produced.
• PT-17B - "Pest Control" Variant for crop dusting; 3 such produced.
• N2S - US Navy Model Designation based on the Model 75.
• N2S-1 - USN Model; fitted with R-670-14 engine; 250 models produced.
• N2S-2 - USN Model; fitted with R-680-8 engine; 125 produced.
• N2S-3 - USN Model; fitted with R-670-4 engine; 1,875 produced.
• N2S-4 - USN Model; fitted with R-670-5 engine; 1,051 produced.
• N2S-5 - USN Model; fitted with R-680-17 engine; 1,450 examples produced.
• PT-18 - Variants fitted with Jacob R-755-7 radial powerplant.
• PT-18A - "Blind Flying" PT-18 Model Variant
• PT-27 - Canadian Export Model; 300 examples delivered; named "Kaydet" in Canada which today translates as the series name as a whole; Enclosed cockpit.


HISTORY



Detailing the development and operational history of the Boeing-Stearman Kaydet Biplane Trainer / Aerobatic Aircraft.  Entry last updated on 6/7/2018. Authored by Staff Writer. Content ©www.MilitaryFactory.com.
When The Boeing Company acquired the Stearman company in 1939, it also acquired the design and production rights to the promising Model 75 series, which itself was flown as the "X-70" as early as 1933. The two-seat biplane would evolved into a series of trainers under the PT-13, PT-15, PT-18 and PT-27 designations and serve through World War 2 and beyond, ultimately becoming a prize aircraft for any aviation aficionado.

The "Kaydet" was initially received by the United States Navy in the form of the Model 73 production series and designated as the NS-1 produced in no fewer than 61 delivered examples. The Model 75 was derived from this production model which was then accepted by the United States Army as the PT-13. These versions were fitted with a Lycoming R-680 engine of 215 horsepower output. 2,141 PT-13 examples were produced and this in five subvariants (PT-13 followed by A, B, C, and D models). Further development led to increasingly improved versions of the base Model 75 that featured a host of powerplant and instrument changes. Kaydets were now being produced on orders numbering thousands and included a slew of USN and US Army variants differing mainly in engine types installed.

Introduction of the Continental-brand R-670-5 series of engines led to a new designation as the PT-17 of which 3,519 were produced (across A- and B-model variants). Later models produced with a Jacobs R-755 powerplant were further designated as PT-18's and these numbered 150 units. The Boeing-Stearman design was also sold to Canada under Lend-Lease during World War 2 as the PT-27 (with enclosed cockpit) and numbered 300 examples delivered.

Total production of Model 75 was approximately 9,800 units.

The Canadian Lend-Lease Model 75s were called "Kaydet" and the name stuck over time, still being used today to identify the line. Kaydets managed to see considerable use after the war as well in the aerial acrobat role and crop dusting. Operators spanned the globe from Argentina and Bolivia to the Philippines and Venezuela (see operators listing below for complete global reach).

Taiwan (Republic of China) was another wartime Lend-Lease partner and recipient of the Kaydet.




MEDIA







General Assessment (BETA)
Firepower  
Performance  
Survivability  
Versatility  
Impact  


Rating: 22 (of 100)
The rating is an internal assessment derived from 60 total factors pertaining to this aircraft.
Relative Maximum Speed Rating
Hi: 150mph
Lo: 75mph
    This entry's maximum listed speed (124mph).

    Graph average of 112.5 miles-per-hour.
City-to-City Ranges
NYC
 
  LDN
LDN
 
  PAR
PAR
 
  BER
BER
 
  MSK
MSK
 
  TKY
TKY
 
  SYD
SYD
 
  LAX
LAX
 
  NYC
Graph showcases the Boeing-Stearman PT-17A Kaydet's operational range (on internal fuel) when compared to distances between major cities.
Aviation Era
Pie graph section
Pie graph section
Pie graph section
Pie graph section
Pie graph section
Useful in showcasing the era cross-over of particular aircraft/aerospace designs.
Unit Production Comparison
Comm. Market HI*: 44,000 units
Military Market HI**: 36,183 units
9800
9800

  * Commercial Market High belongs to Cessna 172.

  ** Military Market High belongs to Ilyushin Il-2.


Altitude Visualization
Small airplane graphic
Supported Roles
A2A
Interception
UAV
Ground Attack
CAS
Training
ASW
Anti-Ship
AEW
MEDEVAC
EW
Maritime/Navy
SAR
Aerial Tanker
Utility/Transport
VIP
Passenger
Business
Recon
SPECOPS
X-Plane/Development
A2A=Air-to-Air; UAV=Unmanned; CAS=Close Support; ASW=Anti-Submarine; AEW=Airborne Early Warning; MEDEVAC=Medical Evac; EW=Electronic Warfare; SAR=Search-Rescue