Columbia Helicopters To Build T55-714 Engine Test Cell. Columbia Helicopters has broken ground at its Aurora, Ore. Share. Post. Share. Print. Copy. Email. By David A. Lombardo • Contributor.

The test cell is located at the company's maintenance headquarters at Aurora, Oregon. This expansion will add T55-714 engine overhaul to the long list of CHI's Chinook capabilities. This testing ...

Columbia Helicopters (CHI) expects to gain US Army approval for its new T55-714 engine test cell in coming months, allowing the company to provide complete engine overhaul of CH-47 Chinooks. Speaking ...