Beech King Air C90 Supplemental Operational Data | Online Manuals

Beech King Air C90 Supplemental Operational Data has 63 pages ENGINE: The PT6A·20 engine has a three stage axial, single stage centrifugal compressor, driven by a single stage reaction turbine. The power turbine, another single-stage reaction turbine, drives the output shaft. Both the compressor turbine and the power turbine are located in the approximate center of the engine with their shafts extending in opposite directions.