As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
MAJOR: MULTIPLE MIS-DRILLED HOLES ON L-H AND R-H HORIZONTAL STABILIZER UPPER SKIN AT SPAR 1 PERFORMED TEMPORARY REPAIR OF THE LH AND RH HORIZONTAL STAB UPPER SKIN AND SPAR MULTIPLE DAMAGED FASTENER HOLES BY WAY OF ENLARGING HOLES FOR -6 AND -7 FASTENERS AS NEED TO REMOVE DAMAGE. AND INSTALLING REQUIRED FASTENERS IN REPAIRED HOLES REF ETD2020-170-004028.