As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AFT PRESSURE BULKHEAD DOOR CUTOUT AFT LOWER LEFT CORNER HAD 2 EACH CRACKS. ONE CRACK WAS 1.250 INCH AND ONE WAS .75 INCH. ONE IN ORIGINAL DOUBLER P/N: 5910130-87 AND ONE IN ORIGINAL DOUBLER P/N: 5910130-85. ALSO AFT PRESSURE BULKHEAD SKIN LOWER TAB HAD DRILL START. REPAIRED BOTH LEFT AND RIGHT AFT PRESSURE BULKHEAD CUTOUT LOWER IAW DC9 SRM.