What was found
CORROSION LOWER SILL LOCATED BS440 TO BS492.4 AT LEVEL RBL21.80 AND WL156 FWD CARGO COMPARTMENT 2024-145913<[01] STEP 3 TOOL USED ULTRASONIC THICKNESS GAUGE P/N: 45MG; S/N: 221860711; CAL DUE DATE: 21-NOV-24;[02] REPLACED LOWER SILL LOCATED BS440 TO BS492.4 AT LEVEL RBL21.80 AND WL156 FWD CARGO COMPARTMENT IAW B737-800 SRM 51-40-02; SRM 51-10-02 ITEM 9 AND DRAWING: 143A8330 REV:A; SEE INDIVIDUAL SIGN-OFF BELOW.;[03] REPLACED LOWER SILL LOCATED BS440 TO BS492.4 AT LEVEL RBL21.80 AND WL156 FWD CARGO COMPARTMENT IAW B737-800 SRM 51-40-02; SRM 51-10-02 ITEM 9 AND DRAWING: 143A8330 REV:A; SEE INDIVIDUAL SIGN-OFF BELOW.AS RII JOB COMPLETE.