As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING SCHEDULED MAINTENANCE, AN INSPECTION OF THE RIGHT INBOARD FLAP REVEALED A 2 INCH CRACK IN THE BOTTOM SKIN ALONG THE TRAILING EDGE BETWEEN THE THIRD AND FOURTH RIB OUTBOARD FROM THE INBOARD END. THE CRACK WAS REPAIRED BY STOP DRILLING AND INSTALLING A DOUBLER.