As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING C-CHECK, FUSELAGE DOUBLER BETWEEN STA 720C- 720D LBL 6 STR 28L IS CHAFED BY RAM AIR DUCT. REMOVED OLD DOUBLER REPAIR IAW B727 SRM 51-30-2. FABRICATED NEW DOUBLER REPAIR FROM MAT 2024-T3 .125 PO 9912571 DIM 12.5 X 8.875 INCH IAW B727 SRM 53-30-2 FIG 3. TREATED AND PRIMED DOUBLER REPAIR IAW B727 SRM 51-10-2. INSTALLED DOUBLER IAW B727 SRM 51-30-2.