What was found
CORROSION FOUND FROM FRAME X47.975 - X32.400 ON ATTACH FLANGE ON RT STR 31. REMOVED 4 RIVETS IAW SRM 51-42-06-00-01. BLENDED AREA IAW SRM 51-21-00-00-02. ENGINEERING REQUEST SENT. ULTRA SONIC THICKNESS EXAMINATION PERFORMED, MINIMUM REMAINING THICKNESS .068" SENT INFORMATION TO MFG. ALL BLENDS ARE ACCEPTABLE IAW RD 8/4-53-3816. TREATED AND PRIMED AREA IAW SRM 51-21-10-02-01 AND 51-25-10-02-01. INSTALLED RIVETS IAW SRM 51-42-05-02-01. ALL WORK DONE IAW RD 8/4-53-3816. APPLIED TOPCOAT AND LPS HARD COAT IAW SRM 51-25-25-02-01 AND 51-21-10-02-01.