As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
FOUND PITTING CORROSION IN RIGHT CENTER WING JUST UNDER THE JET PUMP ON LOWER WING PANEL. COMPLIED WITH BLENDING THE CORROSION IN ACCORDANCE WITH ATR42 SRM AND FOUND TO BE OUT OF LIMITS IN AN AREA 30MM BY 40 MM. THE AREA OF CORROSION IS BETWEEN STIFFENER 8 AND 9 AND BETWEEN 4R AND 5R.