Douglas C-21/26/29 Dolphin

RD-4

 

Type

 Flying boat

Armament

 -

Engine

 2 x Pratt & Whitney R-1340-96 Wasp 9-cyl radial engine 450hp each

Weight

 Empty 3.175kg - Max take-off 4.323kg

Crew

 2 + 6 passengers

Speed

 217km/h

Year of construction

 1931 -

Quantity

 58

User

 USA Argentina and Australia

Manufacturer

  Douglas Aircraft Corporation