As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
WHILE COMPLETING PIPER MANDATORY SB 1004, FOUND PLUG E303 AND WIRING BADLY BURNT. REPLACED PLUG AND WIRING AND RAN WIRING PER SB INSTRUCTIONS. CREW HAD REPORTED STRONG BURNING SMELL ON ONE PREVIOUS FLIGHT. PLUG IS LOCATED BEHIND COCKPIT UPHOLSTERY AND COULD HAVE CAUSED FIRE. SUBMITTER SUGGEST MSB 1004 BE MADE AN AD NOTE. (X)