What was found
DURING MX WALKAROUND OF MX FOUND 3EA CRACKS ON THE EXHAUST NOZZLE OUTER SLEEVE, THE FIRST CRACK STARTING AT APPROX THE 12 O'CLOCK POSITION AND ENDING AT THE 2 O'CLOCK POSITION ON THE NR 3 ENGINE. THE CIRCUMFERENTIAL CRACK IS APPROX 19" LONG AND IS APPROX 13" FROM THE T/E OF THE NOZZLE. THE SECOND CRACK LOCATED AT THE 3 O'CLOCK POSITION MEASURING 5" LONG AND THE THIRD CRACK LOCATED AT THE 9 O'CLOCK POSITION MEASURING 3" LONG, BOTH NEAR THE T/E OF THE SLEEVE. IAW SRM 54-41-30 THE LENGTHS OF THE CRACK ARE OUT OF LIMITS. (DISPOSITION IS TO STOP DRILL THE ENDS OF THE CRACKS WITH A 0.098" DIAMETER HOLE; DVI EVERY 3 FLIGHT CYCLES; AND REMOVAL OF THE PART WITHIN 25 FC (FLIGHT CYCLES).