What was found
WHILE TROUBLESHOOTING A DEFERRAL FOR AN ADF SIGNIFICANT CORROSION AND A BROKEN PIN WAS DISCOVERED ON THE BELLY MOUNTED ADF ANTENNA CONNECTOR. THE ASSOCIATED CONNECTOR WAS ALSO CORRODED AND CONTAINED THE BROKEN PIN. IT IS ASSUMED MOISTURE FROM THE AIRCRAFT INTERIOR FOUND ITS WAY INTO THE CONNECTOR AND POOLED CAUSING THE CORROSION. THE ANTENNA SEALS AERODYNAMIC AND PRESSURE WERE IN A SERVICABLE STATE. MAINTENANCE REPLACED THE ADF ANTENNNA, CONNNECTOR PLUG AND PINS AND RETURNED THE AIRCRAFT TO SERVICE.