What was found
ACFT CLIMBING OUT OF 15-16,000 FT WHEN CREW HEARD A LOUD BANG & EXPERIENCED VIBRATION WITH NOTICED A SIGNIFICANT LOSS OF THRUST FROM RT ENG, FOLLOWED BY A BRIEF HIGH ITT INDICATION & BRIEF SMOKY ODOR, WITH R FADEC FAIL & R OIL PRESS LOW CAUTION MESSAGES. A LARGE AMOUNT OF YAW & CREW DECLARED AN EMERGENCY. ABLE TO GET TURNED AROUND & BACK SAFELY TO TEB WITHIN 10 MINS. AFTER ENG SHUTDOWN ON GROUND, CREW REPORTED A R OIL CHIP CAUTION MESSAGE. ON INSPECT NOTED AFT STAGE TURBINE BLADE MISSING. DOWNLOADED FADEC FILES. REMOVED ENGINE IAW AMM PC24-A-E72-00-0000-00A-520A-A AND PC24-A-E72-00-0000-00A-530A-B AND FJ44-4A-QPM LMM 72-00-00. INSTALLED A NEW ENG IAW AMM PC24-A-E72-00-0000-00A-710A-B, PC24-A-E72-00-0000-00.