What was found
DURING BASIC CHECK IN BNA, GOUGE DAMAGE WAS DISCOVERED ON THE LH WING LEADING EDGE SKIN OUTBOARD OF RIB 40. REFERENCE ETD2020-170-000683-A FIGURE 1 FOR DAMAGE LOCATION AND DETAILS. EAMS REQUESTED AND RECEIVED PERMANENT REPAIR DISPOSITION IN THE FORM OF ETD2020-170-000683-A. THIS EO IS BEING ISSUED TO PROVIDE INSTRUCTIONS TO ACCOMPLISH THE PERMANENT REPAIR OF THE GOUGE DAMAGE LOCATED ON THE P/N 170-31037-021 LEADING EDGE SKIN OUTBOARD OF RIB 40 ON THE LH WING. THE DAMAGE WILL BE REPAIRED BY CUT-OUT AND INTERNAL DOUBLER INSTALLATION PER ETD2020-170-000683-A. BECAUSE THE LH WING LE SKIN IS A PSE AND THIS REPAIR IS RESTORING STRENGTH, ACCOMPLISHMENT OF THIS EO HAS BEEN CLASSIFIED AS A MAJOR REPAIR. EO E175-57MR-019