As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
C5 CHECK- HORIZONTAL STAB FWD SPAR HAS SEVERAL SMOKING RIVETS ON THE INBD RT AND LT SIDES. REPLACED RIVETS IAW SRM 51-42-45. CLEANED AND INSPECTED AREA FOUND NO FURTHER LOOSE RIVETS. FOUND STAINING TO BE FROM WATER SEEPING FROM THE L/E. NO DAMAGE CAUSED TO THE RIVETS.