What was found
10+ AREAS OF VERIFIED CORROSION AROUND PERIMETER OF EMERGENCY EXIT DOOR. MECHANICALLY REMOVED 10 AREAS OF CORROSION ON OUTER SKIN OF E-EXIT. PERFORMED AN EDDY CURRENT AND ULTRASONIC THICKNESS CHECK OF THE BLENDED AREAS AROUND THE PERIMETER OF THE EMERGENCY EXIT DOOR. NO CRACK OR CORROSION INDICATIONS FOUND. FOUND CORROSION BLENDS TO BE BEYOND LIMITS IAW C680 SRM 51-70-02 LIMITATIONS. REPAIRED CORROSION BLENDS IAW TEXTRON FIELD REPAIR SR-680-ATA52-18636 REV-, DATED: MARCH 1, 2019 SUBJECT: STANDARD REPAIR-CORROSION, ESCAPE HATCH DOOR, SKIN. NOTE: SECTION 4.2 PARAGRAPHS 4.2.1 , 4.2.2, AND 4.2.4 OF THIS REPAIR NOT PERFORMED AS NO RIVETS WERE AFFECTED AND CONTOUR RINGS AND SEALS WERE NOT REMOVED. PARAGRAPH 4.2.3 PERFORMED UNDER THIS SQUAWK SUB-SQUAWK 5. THIS IS SUPPORTED BY FAA FORM 8100-9.