Aircraft Identification: What single-engine, T-tail, commuter aircraft has a single prop but sounds like a jet? My morning walk takes me past Hillsboro Airport, Portland, Oregon (HIO), and today I saw a rather strange plane landing.  It was a small commuter-size plane (6 passenger windows on each side), with a single surprisingly large propeller on the nose.  While landing it sounded much more like a jet than a prop.  The tail was "T" shaped and I thought I saw a jet exhaust at the back of the fuselage.

Was I imagining this, or does such a craft exist?

Sorry I didn't get a picture.
Sounds like a Pilatus PC-12 to me. 


image source: Wikipedia, photographer: Chris Finney