As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
INFORMED BY ATC SOMETHING FELL OFF OUR ACFT ON TAKE OFF. CONFERED WITH GOC AND MOC AND DECIDED TO RTB. REMOVED AND REPLACED THE RIGHT NR 1 SLAT IAW AMM 27-80-20-000-801, AND PERFORMED AN ADJUSTMENT TEST IAW AMM 27-80-20-820-801. OPS NORMAL, ACFT OK FOR SERVICE.