As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
FOUND ALL 3 DEICE BOOT LEADS SEVERED AT CONNECTOR MOUNT BRACKET. DETERMINED PROPELLER OVERHAUL SHOP INSTALLED INCORRECTLY. RECOMMEND INSTALLATION PROCEDURES OUTLINED IN PIPER MM AND BFG SB 3-84070 DATED OCT 1989 FOR PROPER BOOT INSTALLATION. SUBMITTER STATED THIS HAS BEEN A REPETITIVE PROBLEM. (X)