As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
(CAN) ACCOMPLISHING D CHECK ON US REGISTERED B737 IT WAS NOTED THAT LEFT HAND AND RIGHT HAND AFT HORIZ STAB ATTACH POINT BOLTS FOUND ONLY HAND TIGHT. UPON FURTHER INVESTIGATION ALL THREE BOLTS AFT ON R/H HORIZ STAB AND ALL THREE BOLTS AFT LT HORIZ STAB HAVE WEAR/FRETTING, PITTING AND LIGHT CORROSION ON THE SHAFTS INDICATING IMPROPER TORQUE VALUE.