As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
FLIGHT CREW REPORTED NO 'SURFACE DE-ICE' LIGHT WHEN DE-ICE BOOTS INFLATED. DETERMINED WING AND TAIL DE-ICE BOOT PRESSURE SWITCHES DEFECTIVE, MOST LIKELY DUE TO WATER CONTAMINATION. SUBMITTER SUGGESTS SWITCHES NEED TO BE INSTALLED IN A POSITION THAT WILL LIMIT WATER ACCESS.