What was found
DURING ACCOMPLISHMENT OF AD 90-26-09 / SB 727-53-0084, FOUND INTERNAL SKIN CIRCUMFERENTIAL JOINT SPLICE AT BS 480 HAS CORROSION UNDER SEALANT FOUR INCHES ABOVE S3L. REMOVED CORROSION IAW B727 SRM 51-10-6. FOUND TO BE WITHIN LIMITS IAW B727 SRM 53-10-1. ULTRASONIC THICKNESS CHECK MINIMUM NOMINAL THICKNESS .036. HFEC INSP C/W NO DEFECTS NOTED. PERFORMED PART IV MODIFICATION (OVERSIZE UNIVERSAL FAST INSTALL) IAW BOEING S/B 727-53-0084 REV 4. NON-ROUTINE TASK CARD NUMBERS 114560 AND 114795. AMERICAN INTERNATIONAL AIRWAYS INC (B4MR567J) ACCOMPLISHING COOK AIRCRAFT LEASING WORKSCOPE FOR PURCHASE UPON COMPLETION.