The TH-57 aircraft is the military version of the commercial Model 206 Jet Ranger helicopter
manufactured by Bell Helicopter Textron, Inc. The aircraft is powered by one Allison Gas Turbine
250-C20J turboshaft engine downrated to 317 shaft horsepower. The primary mission of TH-57 is to
train student naval aviators in the fundamentals of helicopter flight for their transition to operational fleet
aircraft in the U. S. Navy, U. S. Marine Corps, and selected international armed forces.
was procured as a commercial derivative aircraft certified under FAA Type Certificate. Throughout itsí
life, the aircraft has been commercially supported using COTS/NDI components and a combination of
Navy and FAA processes, procedures and certifications to support airworthiness. Aircraft modification
efforts are "turnkey" projects (non-recurring engineering, procurement, installation, test and certification)
implemented as part of competitively awarded maintenance contracts.
Sources and Resources
Maintained by Robert Sherman
Originally created by John Pike
Updated Thursday, December 24, 1998 8:13:37 AM