As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
CREW REPORTED BLEED SYSTEM 1 LEAK MESSAGE ON EICAS ON CLIMBOUT. THE CREW RETURNED TO FIELD AND LANDED WITHOUT INCIDENT. MAINTENANCE FOUND LOOSE WING ANTI-ICE B-NUT AND TIGHTENED. OPERATIONAL CHECKS WERE GOOD WITH NO FURTHER DEFECTS NOTED.