What was found
DURING HEAVY MAINTENANCE, CORROSION ON LOWER SILL BETWEEN FR 66 TO FR 68 AT LEVEL STR 23 LT AFT PAX CABIN. RESOLVED ON W/O: 1070973 TASKCARD: NR-00005. REMOVED AND REPLACED LOWER SILL LOCATED BETWEEN FR 66 TO FR 68 AND AT LEVEL OF STR 23 LT AFT PAX CABIN, IAW A320 SRM 51-72-11 AND DWG NR D53480505. TOOL USED CALIPER P/N: 500-197-30, S/N: A15070678 DUE DATE AUG-11-2021. COMPLETED MX-220 FORM BY CPCP PROGRAM. ACCOMPLISHED ON AEROMAN NRC 2020-308176 W/O 2020-330/1. CLASSIEFIED AS A MAJOR REPAIR.