As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
FRAME SECTION ON THE LOWER FORWARD EMERGENCY TYPE 2 EXIT DOOR (RH SIDE OF AIRCRAFT), ITEM 9 ON IPC 52-20-20. PITTING CORROSION BETWEEN A LIGHTNING HOLE AND THE BEND RADIUS. NOMINAL THICKNESS WAS .050" BY DESIGN, UT READINGS MEASURED OUT AT .052. APPROXIMATE MAX DEPTH OF .004", MAX WIDTH OF .50", MAX LENGTH OF 3.00".