What was found
DURING THE PRESENT C4-CHECK, CORROSION WAS REPORTED ON UPPER DECK LIFT CAR ASSY, PN 747-9202-14 LOWER FLOOR PANEL ASSY SHOWN IN FIG 1. CORROSION AFFECTED LOWER PANEL ASSY PN 747-9262-1 BOTH UPPER AND LOWER SURFACE SHEET SIDES AND AFT EDGES AS SHOWN IN FIG 2. IN ADDITION, THE ATTACHING ANGLE PN 747-9152-1 WAS FOUND CORRODED AND CRACKED AT THE AFT END. (SINCE NO SPARE PART WAS FOUND, PROPOSED THE REPAIR SHOWN IN FIG 2 & AMP; 3.NOTE: THIS REPAIR IS CONSIDERED PERMANENT AND IS APPROVED BY DER IAW 8110-3 FORM IN FIGURE 4.)