As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
ENGINE WAS REMOVED DUE TO WHISTLING SOUND AT HOVER AND GRINDING ROAR ON COOL DOWN. UPON INSPECTION OF TURBINE PARTS NOTED NR 1 WHEEL BLADE FAILURE WITH 1/8 INCH OF BLADE REMAINING FROM BLADE ROOT LEADING EDGE. BLADE TIPS EXHIBIT TIP DRAG AND FOD DAMAGE. NR 2 NOZZLE 1ST STAGE TIP PATH RUNOUT AT DISASSEMBLY WAS .002 INCHES AND 1ST STAGE WHEEL TIP CLEARANCE IS .014 INCHES ASSEMBLY TIP CLEARANCE WAS .0135 INCHES. PART WILL BE RETURNED TO ROLLS ROYCE FOR FAILURE INVESTIGATION.