What was found
AIRCRAFT WAS GROUNDED: ON TAKEOFF ROLL, JUST ACHIEVING TAKEOFF THRUST, AT ABOUT 30 KNOTS, EICAS MESSAGES "ENGINE FAIL RIGHT" AND "ENGINE CONTROL RIGHT" DISPLAYED, AND THERE WAS A LOUD BANG, INDICATING A POSSIBLE COMPRESSOR STALL. FLIGHT ATTENDANTS ALSO REPORTED FIRE BALL OUT THE RIGHT ENGINE, NO FIRE WARNINGS OR INDICATIONS PRESENT. MAXIMUM EGT NOTED WAS 700 ***SUPPLEMENTAL REPORT: ENGINE SHOP REPORTED THE SUSPECTED ROOT CAUSE OF THE DAMAGE WAS THE MATERIAL RELEASED FROM THE IPC STAGE 2 VSV INNER SHROUD. THE MATERIAL RELEASE FROM THE IPC IS NOT A PREVIOUSLY KNOWN FAILURE. THE INVESTIGATION RESULTS HAVE BEEN REPORTED TO ROLLS-ROYCE FOR FURTHER INVESTIGATION.*** (CLOSED)