As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING THE INSTALLATION OF ISPS EA ERJ3468-23 (STC ST04435AT), 1 HOLE WAS MIS-DRILLED ON STRINGER 20L BETWEEN FRAMES 30 AND 31 NEXT TO STRUCTURE BAY DRAIN HOLE ON STRINGER 20L. (FILED - CLOSED) COMPLIED WITH REPAIR OF STRINGER 20L BETWEEN FRAMES 30 AND 31 PER CHIPPEWA REPAIR DRAWINGS 170-2454-01-375-N505SY REV: IR, DATED 11-APRIL-2022. SEE ATTACHED REPAIR DRAWINGS AND 8110-3.