![](/sites/default/files/styles/crop_freeform/public/2023-10/phoenix_r_o_facility_ch-47_chinook_t55_engine-2880x1440.jpg?itok=CTDSUslu)
A T55 engine installed on a Boeing CH-47.
Credit: Honeywell
Honeywell has started testing a second proposed option to upgrade the company’s 4,800-shp T55-GA-714A engine on the Boeing CH-47 Chinook, but U.S. Army officials remain silent on whether a propulsion upgrade will be funded. The 6,000-shp T55-GA-714C, which includes a new compressor module, has...
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