As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING THE VALVE CHECK A MECHANIC NOTED A CRACK EXTENDING LONGITUDINALLY FROM THE LT FWD NAV/VOR ANTENNA MOUNT. MFG HAS PREVIOUS KNOWLEDGE OF THIS DEFECT AND HAS DEVISED A REPAIR SCHEME FOR THIS DEFECT. RDAS (REPAIR DESIGN APPLICATION SHEET) NR RDAS-AE11-0148, DATED 14 MARCH 2011. THIS DEFECT HAS HAD NO SPECIFIC INSP CRITERIA FOR ITS DETECTION. SUGGEST THIS AREA BE IMPLEMENTED INTO MFG INSPECTION OR ICA CRITERIA NOT TO EXCEED 200 HOURS BETWEEN INSP.