As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
WHILE ACCOMPLISHING PEMCO SB 737-57-0001 REV 5 AND SB 737-57-1210 REV 2 OF AD 2008-04-21 FOUND CRACK INDICATIONS WERE NOTED AT BBL .07 FLOOR BEAM BETWEEN BS 705-715 BETWEEN THE LOWER WEB FLOOR BEAM #1-#4 HOLES AND #6-#7 HOLES. CRACKS WERE ALSO NOTED AT THE UPPER #7 AND #8 UPPER FLOOR BEAM CHORD HOLES.