As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
PIN HOLE ON UPPER SKIN OF RH HORIZONTAL STABILIZER AT REAR SPAR BETWEEN RIBS 10 AND 11. : REMOVED PIN HOLE DAMAGE ON UPPER SKIN OF RH HORIZONTAL STABILIZER AT REAR SPAR BETWEEN RIB 10-11 BY DRILLING THROUGH DAMAGE AND INSTALLING RIVET. REF EMB ETD2021-170-041881.