What was found
FORWARD CARGO DOOR SILL LOWER CHORD HAD CORROSION BLENDED FROM THE HORIZONTAL INSIDE FLANGE AT STATION 616. AREA OF DISCREPANCY IS 2.5 INCHES BY 2.5 INCHES WITH A DEPTH OF .033 INCH. REMOVED FASTENERS AND BLENDED CORROSION AWAY USING A MINIMUM 0.5 INCH BLEND RADIUS WITH AT 20:1 TAPER RATIO. PERFORMED VISUAL 10X MAGNIFICATION INSPECTION TO ENSURE CORROSION WAS REMOVED. PERFORMED HIGH FREQUENCY EDDY CURRENT INSPECTION OF THE BLENDED AREA AND PERFORMED A BOLT HOLE HIGH FREQUENCY EDDY CURRENT INSPECTION OF FASTENERS WITHIN THE REWORK AREA FOR CRACKS. ENSURED THE REPAIR AREA MEASURED 2.5 INCHES MAXIMUM DIAMETER AND A MINIMUM REMAINING THICKNESS OF 0.170 INCH. APPLIED 2 COATS OF PRIMER TO THE REWORK AREA AND INSTALL