What was found
MDIS 608 53-30 8313 05MAY19 MEM OPEN U FOUND RIVETS PULLING THRU THE SKIN ON THE AFT RT SIDE OF FUSELAGE, APPROX 18 INCHES BELOW THE AFT CARGO DOOR FRAME, FROM CENTER OF DOOR FRAME GOING AFT. MARKED WITH GREEN TAPE. BETWEEN STA. 1721 AND STA. 1781 PER SRM 53-00-00-0G. SHGN 05MAY19 23:00 MEM U LONGERON 47R BETWEEN FR STA 1701 AND 1781 HAS INTERGRANULAR CORROSION. AFTER AREA IS OPENED UP WILL BE ABLE TO EVALUATE ANY OTHER STRUCTURE INVOLVED. FACT 16MAY19 20:23 MEM REPLACED DAMAGED LONGERON (L46R), AND REPAIRED SKIN CUTOUT TO FACILITATE LONGERON REPLACEMENT, REF FUSELAGE 46R- FUSELAGE SKIN REPAIR AT STATION 1787-1818/ L46R AFTER INSTALLATION OF NEW L46R EA 1-5310-T0346861 PARTS 1, 2 AND 3.