What was found
(AIRCRAFT 3758, L/P 0407716) AWR HIDDEN CORROSION: AFTER MAKE ACCESS WAS FOUND CORROSION ON DOUBLER OF PRODUCTION STA= 747 TO 767 BTW STGR 27R TO 27L AT AFTER CARGO COMPARTMENT ON REFERENCE OF JOB FOLLOW-UP NRC 00027. CORROSION LEVEL II.- PRODUCTION DOUBLER/ FITTING ON STA= 747 TO 767 BTW STGR 27R TO 27L AT AFTER CARGO COMPARTMENT ON REFERENCE OF JOB FOLLOW-UP NRC 00027 WAS REPLACED PER B737-800 SRM 51-40-02 & ER/A 565484-14 REV. ORIGINAL PAR.15. REPAIR APPROVAL IS LIMITED TO 24 MONTHS FROM THE FAA FORM 8100-9 APPROVAL DATE 31-JAN-18. AN ADDITIONAL ER/A REVISION IS REQUIRED FOR CONTINUED REVENUE SERVICE BEYOND THIS LIMIT.