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de Havilland Canada DHC-3 Otter

Floatplane Aircraft

de Havilland Canada DHC-3 Otter

Floatplane Aircraft

OVERVIEW
SPECIFICATIONS
ARMAMENT
VARIANTS
HISTORY
MEDIA
OVERVIEW



Despite its 1950s origins, the DHC-3 series floatplane is still in active service today.
National Flag Graphic
ORIGIN: Canada
YEAR: 1953
STATUS: Active, In-Service
MANUFACTURER(S): de Havilland Canada - Canada
PRODUCTION: 466
OPERATORS: Argentina; Australia; Bangladesh; Burma; Cambodia; Canada; Chile; Colombia; Costa Rica; Ethiopia; Ghana; India; Indonesia; New Zealand; Nicaragua; Nigeria; Norway; Panama; Paraguay; Philippines; United Kingdom; United States
SPECIFICATIONS



Unless otherwise noted the presented statistics below pertain to the de Havilland Canada DHC-3 Otter model. Common measurements, and their respective conversions, are shown when possible.
CREW: 1
LENGTH: 41.99 feet (12.8 meters)
WIDTH: 58.04 feet (17.69 meters)
HEIGHT: 12.57 feet (3.83 meters)
WEIGHT (EMPTY): 4,431 pounds (2,010 kilograms)
WEIGHT (MTOW): 8,001 pounds (3,629 kilograms)
ENGINE: 1 x Pratt & Whitney R-1340-S1H1-G Wasp 9-cylinder, air-cooled radial piston engine developing 600 horsepower.
SPEED (MAX): 160 miles-per-hour (257 kilometers-per-hour; 139 knots)
RANGE: 944 miles (1,520 kilometers; 821 nautical miles)
CEILING: 18,799 feet (5,730 meters; 3.56 miles)
RATE-OF-CLIMB: 850 feet-per-minute (259 meters-per-minute)




ARMAMENT



None.
VARIANTS



Series Model Variants
• DHC-3 - Base Series Designation
• DHC-3-T "Turbo-Otter" - Fitted with 1 x Pratt & Whitney Canada PT6A-27 or -34 turboprop engines.
• CSR-123 - Royal Canadian Air Force utility model.
• YU-1 - U.S. Army evaluation aircraft; six examples.
• UC-1 - United States Navy utility model.
• U-1A - U.S. Army utility model.
• U-1B - 1962 redesignation of USN UC-1 models.
• DHC-3/1000 "Otter" - Airtech Canada models fitted with PZL ASz-62IR series engines.


HISTORY



Detailing the development and operational history of the de Havilland Canada DHC-3 Otter Floatplane Aircraft.  Entry last updated on 8/24/2018. Authored by Staff Writer. Content ©www.MilitaryFactory.com.
The de Havilland Canada DHC-3 "Otter" became the evolutionary step for what was the earlier DHC-2 "Beaver" of 1948 (detailed elsewhere on this site). The DHC-3 was first-flown on December 12th, 1951 and introduced as soon as 1953. Production of the series, which reached 466 units, spanned from 1951 until 1967 with operators worldwide.

The Beaver had already proven itself a commercial success by this time with some 1,657 ultimately produced. This airframe utilized strong qualities allowing for excellent Short Take-Off and Landing (STOL) capabilities. A braced, high-wing mainplane was fitted and the nose held the single engine installation. From this framework was born the dimensionally larger specimen, the DHC-3, that continued the excellent STOL traits with more power to boot. Work on the design began in January of 1951 and led to the aforementioned first-flight. Certification then followed in November of 1952.

Power was from a single Pratt & Whitney R-1340 air-cooled radial piston engine of 600 horsepower. The larger dimensions allowed for more passengers to be carrier (up to eleven) and the wider-spanning wing mainplane gave better control and additional lift/drag for short take-off and landing actions. The undercarriage was made to switch out wheeled legs, floats or even skis.

Seven named models of the Otter series ultimately emerged. DHC-3 was used for the initial production systems while the product was taken into service by the Royal Canadian Air Force (RCAF) as the CSR-123 "Otter". The United States Army began their own evaluation of the platform and procured six of the type under the designation of YU-1. These became the U-1A in actual service. The United States Navy (USN) followed suit and adopted the series as the UC-1. These were later redesignated U-1B after the 1962 American military realignment. A PWC turbo-prop-powered form became the DHC-3-T "Turbo-Otter". Those Otter examples coming from Airtech Canada with Polish PZL "Kalisz ASz-62IR engines were designated DHC-3/1000.

There were a plethora of operators committed to the DHC-3 line ranging from Argentina and Australia to the United Kingdom and the United States. It served at both military and civilian levels where its qualities were put to the test. The DHC-3 went on to form the foundation for de Havilland Canada's next-in-line aircraft, the DHC-6 "Twin Otter" - a twin-engined offshoot of the original, detailed elsewhere on this site.




MEDIA







Our Data Modules allow for quick visual reference when comparing a single entry against contemporary designs. Areas covered include general ratings, speed assessments, and relative ranges based on distances between major cities.

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Relative Maximum Speed Rating
Hi: 200mph
Lo: 100mph
    This entry's maximum listed speed (160mph).

    Graph average of 150 miles-per-hour.
City-to-City Ranges
NYC
 
  LDN
LDN
 
  PAR
PAR
 
  BER
BER
 
  MSK
MSK
 
  TKY
TKY
 
  SYD
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  LAX
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  NYC
Graph showcases the de Havilland Canada DHC-3 Otter'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
466
466

  * Commercial Market High belongs to Cessna 172.

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


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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