As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING PERFORMING LH AND RH RUB STRIP INSTALLATION PER SB 747-53A2721R3/ AD 2013-26-12, FOUND AFT RUB STRIPS INTERFERING WITH EXISTING PROTUDING HEAD FASTENERS ON FUSELAGE SKIN AT BS2517 TO 2628 LH AND RH(<P>WORK ACCOMPLISHED IAW EN# 1019-25 REV 0. NO FURTHER DEFECTS NOTED.</P>)