Hughes TH-55A Osage

A picture of the Hughes TH-55A Osage

The Osage was first flown as the civilian Model 269 in October 1956.  It proved quite popular for training and with police and corporate owners.  In 1964, it was selected by the U.S. Army as its primary helicopter trainer and was given the designation TH-55A and the name Osage.  TH-55’s served until 1988, but they saw the most use during the Vietnam War when the Army’s need for helicopter pilots was virtually insatiable.  Nearly 800 Osages were built for the Army and many of them found their way onto the civil market after they were retired where they remain a popular light helicopter.

Rotor Diameter

25 ft 3 in.

Length

28 ft 11 in.

Height

8 ft 2 in.

Weight

1,670 (loaded)

Maximum Speed

86 MPH

Service Ceiling

10,200 ft

Range

195 miles

Engine

One Lycoming H10-360-B1A piston engine with 180 horsepower

Crew

2

Manufacturer
Hughes

Markings
Pima Air & Space Museum, 1980

Designation
TH-55A

Serial Number
67-15418

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