What was found
(CAN) DE-ICE DISTRIBUTION VALVE DRAIN HOLE PLUGGED WITH POTTING COMPOUND LEADING TO MOISTURE ACCUMULATION AND CAUSING DAMAGE TO SEALING SURFACES LEADING TO MALFUNCTION.
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
(CAN) DE-ICE DISTRIBUTION VALVE DRAIN HOLE PLUGGED WITH POTTING COMPOUND LEADING TO MOISTURE ACCUMULATION AND CAUSING DAMAGE TO SEALING SURFACES LEADING TO MALFUNCTION.