As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING M-CHECK, FOUND AFT CARGO BS 1500, S28L TO S29L 2 EA CHANNELS ATTACHED TO FLOOR SUPPORT HAS CORROSION. REMOVED CHANNEL SUPPORT IAW SRM 51-42-02. LOCATED AND DRILLED CHANNEL SUPPORT IAW SRM 51-40-05. TREATED AND PRIMED IAW SRM 51-20-01. INSTALLED CHANNEL SUPPORT IAW SRM 51-40-02.