What was found
(CAN) DURING CRUISE FLIGHT, RIGHT ENGINE BEGAN TO RUN ROUGH. INVESTIGATION REVEALED 4 BROKEN STUDS 1-P/N 5015, 2-P/N 38-13, 1-P/N 69679 ON THE BOTTOM FLANGE OF #5 CYLINDER. MOVEMENT OF THE CYLINDER CAUSED THE INDUCTION PIPE SEAL P/N 72711 TO DISLOCATE, CAUSING A LARGE INDUCTION AIR LEAK. THE ENGINE WAS REPLACED.