As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
MSP - FLT 3139 - LEFT INTAKE HEAT LIGHT ILLUMINATED. DIVERTED TO CWA. MAINTENANCE FOUND CHAFFED WIRES AT LOWER DUCT THERMISTOR CANNON PLUG BACK SHELL. SWAPPED UDDER HEAT THERMISTOR TO SPARE.. GROUND RAN FOR 30 MINUTES, NO DEFECTS NOTED. (M)