What was found
REMOVAL OF FLOOR PANELS FOR ACCESS REVEALED SUPPORT Z ON RH SIDE FROM 727I-727L HAS MULTIPLE AREAS OF CORROSION. GROUNDED - YES. VERIFIED AREAS OF CORROSION TO BE AT .030 BEFORE DAMAGE REMOVAL. ORIG THICKNESS .040 PER BAC1496-377 AREA OUT OF LIMITS PER B737-900 SRM 53-60-15-1A-1. REMOVED SUPPORT ZEE AT STA 727I - 727L IAW B737-900 SRM 51-40-02. FABRICATED NEW SUPPORT ZEE CHANNEL. P/N BAC1496-377 7075 T62 PO:1120674.1 IAW B737-900 SRM 53-00-53-2R-5. APPLIED PROTECTIVE TREATMENT IAW B737-900 SRM 51-20-01. INSTALLED REPAIR PARTS AT STA 727I-727L ON R/H SIDE OF AFT CARGO IAW B737-900 SRM 53-00-53-2R-5 AND ASA B DWG 146A7500-REV-.