As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
MAIN AVIONICS BAY TCAS OMNI-DIRECTIONAL ANTENNA DOUBLER HAS CORROSION BETWEEN FS 295 AND FS 310. REMOVED DAMAGED TCAS ANTENNA DOUBLER IAW SRM AND INSTALLED NEW TCAS ANTENNA DOUBLER, PN: SH670-32364-5 IAW SRM. PERFORMED PRESSURIZATION CHECK IAW AMM PRESSURE CHECK GOOD NO LEAKS DETECTED.