What was found
COE HEAVY CHECK / LEVEL 2 CORROSION: EXTERIOR FUSELAGE, LOWER RADIO ALTIMETER ANTENNA NUMBER 2 MOUNTING SKIN SURFACE HAS LEVEL 2 CORROSION BEYOND ALLOWABLE LIMITS. (LENGTH .75, WIDTH .6 AND DEPTH.033") REMOVED PLATE, RECEIVED NEW DOUBLER, INSTALLED NEW DOUBLER (PLATE) IAW ATR SRM.