What was found
***CORROSION*** R/H Z CHANNEL FROM STATION 500A TO 500D HAS MULTIPLE AREAS OF CORROSION AROUND FASTENER HOLES / CORROSION AROUND FASTENER HOLES ON RH Z CHANNEL STATION 500A TO 500D FOUND TO BE OUT OF LIMITS IAW B737-800 SRM 53-00-53-1A-2 FIG 103 DETIAL D. REMOVED Z CHANNEL FROM STATION 500A TO 500D+10' AND LOCATED REPAIR SPLICE AT STA 500D+10'. FABRICATED AND INSTALLED REPLACEMENT Z CHANNEL AND SPLICE IAW B737-800 SRM 53-00-53-2R-5 AND SRM 51-40-02-0G-0 AND DWG #143A7500 SHEET 75