As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
UPPER VERTICAL FIN BASE ANGLE HAS CRACK INDICATION BETWEEN THE NR 4, 5 FASTENER HOLES FROM THE RT SIDE REF WC 8-553074303B1 - P1 EA 8-5530-3855 DATED 6/8/98 WRITTEN BASE ANGLE WILL BE REPETITIVE INSPECTED AT INTERVALS NOT TO EXCEED 1800 HRS. BASE ANGLE TO BE REPLACED AT NEXT C-CHECK OR APPROXIMATELY 3,600 FLIGHT HOURS.