As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
NOISE IN AREA OF THE UPPER TCAS ANTENNA. ANTENNA SEALANT FOUND DETERIORATED AND BLACK AIR STREAKS EMITTING FROM AREA. ACCOMPLISH CABIN PRESSURIZATION AND CHECK AREA FOR POSSIBLE NOISES ON THE INSIDE OF A-C AND OUTSIDE OF A-C AFTER REPLACEMENT OF TCAS ANTENNA. PRESSURIZED AIRCRAFT REF JRH2-40-80, FOUND NO LEAKS AT UPPER TCAS ANTENNA.