As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
UPON REMOVAL OF INTERCOSTAL SILL ON STRINGER STGR 21L FS333.00 TO FS349.00 FOUND ELONGATED HOLES ON VERTICAL FLANGE OF STRINGER. REPAIRED FOR OVERSIZED HOLE ON STRINGER 21L AT FS333.00 REF-CRJ-700 REO 670-53-21-2629 REV --, LEAK CHECK PASSED. COMPLIED WITH TASK 51-900-1002-SKY.