What was found
CRACK ALONG INTERNAL FUEL TANK DOUBLER UNDER RH WING RIB 9 FOUND CRACK TO BE MIGRATING ACROSS DOUBLER THROUGH 3 HIGH LOCK (FWD) HOLES. REMOVED HILOCK COLLARS FROM SPLICE ON OUTBD SIDE OF RIB 9 AND REMOVED FILLET SEALANT. REMOVED SPLICE BELOW RIB 9. FOUND RH WING SPLICE TO BE CRACKED. DRILLED NEW DOUBLER FOR RIB 9 UNDER RH WING READY FOR INSTALL. COMPLETED INSTALL OF DOUBLER PLATE AT RH WING AT RIB 9. COMPLIED WITH ETD 2023-145-008902 AT RH WING RIB 9 SPLICE PLATE. INSTALLED FUEL PANELS 631DB AND 641AB. PERFORME DLEAK CHECK. LEAK CHECK FOUND TO BE SAT. NO LEAKS NOTED.