As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING ROUTINE MAINTENANCE IN ANCHORAGE, AK (ANC), MAINTENANCE NOTED THAT (2EA.) FASTENERS COMMON TO THE HORIZONTAL STABILIZER LOWER SKIN & SPAR CHORD HAVE CRACKED OUT. THE CRACKS MEASURE .204” AND .242” LONG, RESPECTIVELY, AND THEY EMANATE IN THE OUTBOARD DIRECTION FROM THE FASTENER HEADS.