As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AIRCRAFT IN BASE MAINTENANCE: RIGHT HORZIZONTAL STAB UPPER SURFACE PANELS SECTION BETWEEN AUX AND FRONT SPAR FORWARD EDGES HAVE EROSION. ACCOMPLISHED A PERMANENT REPAIR UPPER SURFACE PANELS SECTION BETWEEN AUX AND FRONT SPARE FORWARD EDGES PER B777-200 SRM 55-10-01-1A-4.