What was found
C4 CHECK - DURING INSP FOUND CORROSION FRAME ATTACH FLANGE AT FS 333 BETWEEN STR 26R & 27. BLENDED CORROSION ON ATTACH FLANGE AT FS 333.00 BETWEEN STR 26R & 27 IAW SRM 51-21-06-001-001-A01. REMOVED .004 MATERIAL, ORIGINAL MATERIAL .050, REMAINING MATERIAL .046, FOUND TO BE A NOT DAMAGE ALLOWED AREA IAW SRM 53-21-06-101-002-A01. REMOVED RIVETS FOM IAW SRM 51-42-06-001-001-A01. PERFORMED ECI ON BLENDED AREA, NO CRACKS OR CORROSION FOUND AT THIS TIME IAW NDTM ECI 51-20-006-250-A01. ENGINEERING REQUEST SENT, RECEIVED REO FROM MFG. AREA IS ACCEPTABLE AS IS IAW REO 670-53-21-596. TREATED IAW SRM 51-21-11-001-001-A01. APPLIED TOPCOAT AND CORROSION PREVENTATIVE COMPOUND IAW SRM 51-25-16-001-001-A01 AND 51-21-11-001-001-A01. ALL WORK DONE IAW HORIZON AIR TASK CARD REO670-53-21-596.