What was found
(CAN) AIRCRAFT WAS PERFORMING GND RUN BEFORE FLIGHT WHEN THE PILOT NOTICED THAT THE TEMP ON THE RT ENG WAS SIGNIFICANTLY HIGHER. UNUSUAL NOISE WAS ALSO HEARD FROM THE ENG WHILE HOVERING. THE FLIGHT WAS ABORTED. CUSTOMER PERFORMED BORESCOPE INSPECTION & FOUND THE COMPRESSOR TURBINE BLADES UNSERVICEABLE. MFG WILL INVESTIGATE TO ESTABLISH ROOT CAUSE & PROVIDE INFORMATION THROUGH SUBSEQUENT SERVICE DIFFICULTY REVIEW MEETING & SUPPORTING DOCUMENTS OR OTHER AGREED UPON COMMUNICATIONS.