The Sikorsky Model S-55, military H-19 Chickasaw, was initially procured in November 1949. It was the world's first transport helicopter with an enclosed body capable of carrying passengers or cargo.
The 12-place H-19 (redesignated UH-19 in 1962), with a crew of two, served as a utility, troop carrier, and rescue helicopter with winch. Air Force model numbers were H-19A and H-19B while Army model numbers were H-19C and H-19D.
In the MedEvac role in Korea it was used to carry six litters and one medical attendant, for the first time under cover, within the aircraft.
During the final months of the Korean war, two companies of H-19 Chickasaw helicopters demonstrated the value of helicopter transport by moving cargo and personnel and then by participating in prisoner exchanges and other functions after the 27 July 1953 armistice.
The Sikorsky Model S-55 was licensed and built in Great Britain as the Whirlwind. The UH-19 had a three-bladed main rotor and a metal two-bladed tail rotor. The H-19C was powered by a single Pratt & Whitney R-1340-57 550 hp engine; H-19D by a Curtis-Wright R-1300-3D 700 hp piston engine.
Today in WW II: 26 Nov 1942 Battle of Brisbane: American and Australian soldiers fight in Brisbane, Australia with multiple fatalities [26-27 Nov].
Sikorsky H-19 Chickasaw Helicopter Specifications and Performance