As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
WHILE PERFORMING UNSCHEDULED MAINTENANCE, VERTICAL STABILIZER WAS REMOVED, WHILE THE MECHANIC WAS INSPECTING THE FITTINGS FOR REINSTALLATION OF THE VERTICAL STABILIZER NOTICED A CRACK COMING FROM BOTTOM RT LOWER MOUNTING HOLE ON FORWARD FITTING. AT THIS TIME NO PROBABLE CAUSE OR RECOMMENDATION. (K)