Pratt & Whitney Canada PT6A-68 is a PT6A-family turboprop model listed for the T-6A Texan II. The PT6A architecture uses reverse flow, a multi-stage compressor with a single-stage compressor turbine, an independent free power turbine, and an epicyclic reduction gearbox; the exact PT6A-68 rating is not asserted here because the current manufacturer page presents power ranges by series rather than a model-specific value.