As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
L DUCT LEAK LIGHT ILLUM EICAS MSG L BLD DUCT LEAK DISPLAYED LIGHT EXT AFTER ENGINE BLEED AIR SUPPLY AND ISOL VALVES CLOSED. REMOVED AND REPLACED L ANTI-ICE VAVLE PERISEAL REF 30-11-02. PERFORMED WING ANTI ICE VAVLE TEST NO LEAKS NOTED. PERFORMED FIM TASK 26-18-00 OPS CHECK GOOD.