I have a P80 with under 2-3 hr run time on it ... its only been run at full rpm twice (was detuned before) I also have a FOD screen on the engine ...

I took the engine out of the plane for maintenance of the plane, and when i spin the ening by hand, it makes tat-tat-tat sound .. I do not think its a bearing so soon .. (never over heated, and run under 110,000 for the most part .... ), though i never had a bearing go yet on any engine so im not sure what that would sound like ..

there is a possibility that i got a piece of dry grass in the engine (last 2 landings i shut down before landing, and the engine would not have bolwn whatever got in out ... )

anyway, im not sure if i should send the engine in for a checkup, or run it again and see if this goes away ... ???

the bearings feel very smooth, and when moving the turbine over, the noise does not occur ..


what do you guys think ?


Wojtek