What was found
YIP - INVESTIGATE X-RAY INDICATIONS AT 2 RIVETS MARKED IN RED ON OUTER SURFACE OF AFT LOWER CARGO DOOR, LOWER FORWARD CORNER. REMOVED REPAIR DOUBLERS TO INVESTIGATE FUSELAGE SKIN. FOUND EXISTING CRACK WAS STOP DRILLED PER L-188 SRM 53-2-1, FIG 2, SHEET 6. REINSTALLED REPAIR DOUBLERS IAW L-188 SRM 52-2-1, FIG 2, SHEET 6. (M)