Mase Taylor
(Top Gun)
09/20/08 02:09 PM
Re: Turbine P-Baron

When Hawker/Beech re-engined the C90 King Air to make the C90GT, they replaced 550shp PT6A-21 engines with 550shp PT6A-135A engines. Why bother, you say? Because the -135A engines are derated; they are thermodynamically capable of 750shp. So they can maintain full rated power of 550shp to a much higher altitude without overtemping. This make the C90GT almost 30 kt faster, and much better climb performance.

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