What was found
#2 ENGINE COMBUSTION CHAMBER OUTER LINER HAS A CRACK WICH EXTENDS THRU PANELS 1;2;3 AND 4. WITH TWO AREAS OF MISSING OVERHANG WHICH ARE BOTH LARGER THAN 2 TIMES THE SIZE OF THE DILLUTION HOLE. PERFORMED COLD SIDE BOROSCOPE AND FOUND COOLING RIBS 12 AND 3 CRACKED THRU.<[01] #2 ENGINE WAS REMOVED (S/N 876580) AND REPLACED WITH ENGINE (S/N 894221) ON MT 771-00-01 (TTG8Q0064PL2). NON-ROUTINE SHOP WORK ORDER (TTG8Q00HJ2ZQ) WAS GENERATED ON ENGINE S/N 876580.