Boeing/Vertol H-21C 'Shawnee'
Description
Manufacturer:Boeing/Vertol
Designation:H-21
Version: C
Nickname: Shawnee
Type: Helicopter
Crew: 3
Specifications
Length: 54' 16.46 M
Height:15' 4.57 M
Wingspan: 44' 13.41 M
Empty Weight: 9000.00 lbs4081.00 Kg
Gross Weight: 14998.0 lbs6802.00 Kg
Max Weight: 15000.0lbs6802.00 Kg
Propulsion
No. of Engines: 1
Powerplant: Wright R-1820-103 Cyclone
Horsepower (each): 1425
Performance
Range: 300 miles 483.00 Km
Max Speed: 120.00 Mph 193.00 Km/H 104.32 Kt

Known serial numbers
51-15881 / 51-15913, 52-8613 / 52-8664, 52-8680, 55-4132 / 55-4221, 56-2015 / 56-2160, 56-4343 / 56-4354

Examples of this type may be found at
Hill AFB Museum
Wings Over The Rockies Aviation & Space Museum