As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING INSPECTION PRIOR TO PAINTING, FOUND CORROSION ON INBOARD LOWER SURFACE OF ELEVATOR TRAILING EDGE. TWO HOLES APPROXIMATELY .125 INCH DIAMETER ALONG WITH SMALLER PIN HOLES WERE FOUND. SUSPECT CAUSE, FOAM IN TRAILING EDGE RETAINING WATER INSIDE TRAILING EDGE ASSY. SUGGEST CLOSE INSPECTION OF FOAM FILLED SURFACES.