What was found
DURING HEAVY CHECK, APU FIRE WALL 351BZ AT LOWER AND UPPER BENDS IS CRACKED. MX REPAIRED APU FIRE WALL 351BZ BY CUTTING OUT DAMAGE IAW SRM 53-31-21, REV 28. REF VP016005-2015/342 C1 FOR CORRECTIVE ACTION. REPAIR REQUIRES RE-INSPECT WITH THE FOLLOWING REQUIREMENTS EXTERNAL DET OG 10000, F/C TRANSFERED TO NON MEL DMI 135440/ 3 FOR 6 MONTHS TO ALLOW INCORPORATION TO INSPECTION MAINTENANCE PROGRAM GMM 5.14.3. ACFT REMAINS UNTIL HEAVY CHECK IS COMPLETED.