As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING HEAVY MAINTENANCE: CORROSION UPPER SURFACE OF THE UPPER SKIN OF THE CENTER WING BOX BTW. Y1292 TO Y1732 AND BTW FR41 TO FR42 IN PASSENGER CABIN (CPCP RELATED M PD TASK 571157-01); REF AEROMAN WO 2023 252/1 NR 2023-456570 PERFORMED REPAIR ON UPPER SURFACE OF THE UPPER SKIN OF THE CENTER WING BOX BTW. Y1292 TO Y1732 AND BTW FR41 TO FR42 IN PASSENGER CABIN I.A.W EA# 57-0281-23 PART# 1.