What was found
DURING BASIC CHECK AT EAMS, CORROSION DAMAGE WAS DISCOVERED ON SHEAR CLIPS, INTERCOSTALS AND ANGLES IN THE AFT CARGO COMPARTMENT. THIS EO IS BEING ISSUED TO PROVIDE INSTRUCTIONS TO ACCOMPLISH THE PERMANENT REPAIRS OF THE CORROSION DAMAGE BY REPLACEMENT OF THE FOLLOWING AFT CARGO STRUCTURE: P/N 170-87560-001 INTERCOSTAL AND P/N 170-87561-001 ANGLE, P/N 170-87562-001 INTERCOSTAL AND P/N 170-87563-001 L-ANGLE, P/N 170-66041-002 FR87 SHEAR CLIP, P/N 170-66042-002 FR87 SHEAR CLIP, P/N 170-66531-001 FR88 SHEAR CLIP. REFERENCE FIGURES 1 TO 6 FOR DAMAGE LOCATIONS AND DETAILS. REPLACEMENT OF PARTS IS ACCOMPLISHED IN ACCORDANCE WITH EMBRAER DRAWINGS LISTED IN TABLE 2, WHICH ARE APPROVED AS PART OF THE TYPE CERTIFICATE, AND SRM CHAPTER 51 PRINCIPLES. SUPPLEMENTAL FOLLOW UP INSPECTIONS WILL NOT BE REQUIRED FOR DIRECT REPLACEMENT OF THE STRUCTURE. COMPASS ENGINEERING HAS CLASSIFIED THIS AS A MINOR REPAIR.FR 87 STR 28R- 29R X= 939" Y= 5" Z= 61" W.O.#2523875421