What was found
DURING BASIC CHECK AT EAMS, CORROSION WAS DISCOVERED ON THE CENTER FUSELAGE III STRINGER 21L BETWEEN FR87/FR90 (P/N 170-91898-003) DURING INSPECTION IN THE AREA. REFERENCE ETD2020-170-000574-A FIGURE 1 FOR DETAILS AND LOCATIONS. EAMS REQUESTED REPAIR DISPOSITION FROM RTS, WHO PROVIDED ETD2020-170-000574-A TO ALLOW THE INSTRUCTIONS FROM SRM II 53-22-03/ REPAIR 02P, WHICH IS APPLICABLE TO THE CENTER FUSELAGE II, TO BE USED FOR THIS STRINGER IN A DIFFERENT FUSELAGE SECTION. THIS EO IS BEING ISSUED TO PROVIDE INSTRUCTIONS TO ACCOMPLISH A PERMANENT REPAIR OF DAMAGE TO THE STRINGER 21L BY SPLICING IN A NEW SECTION OF STRINGER PER SRM PART II 53-22-03/REPAIR 02. ACCOMPLISHMENT OF THIS EO HAS BEEN CLASSIFIED AS A MAJOR REPAIR BECAUSE THE STRINGER 21L IS PSE AND THIS EO RESTORES STRENGTH. EO E175-53MR-480 IS BEING ACCOMPLISHED BY WO 2817684