As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
CREW REPORTED, RECEIVED A BLEED 1 LEAK MESSAGE WHILE CLIMBING THROUGH 21,000 FEET, WHILE IN ICING CONDITIONS. THE CREW DIVERTED AND THE AIRCRAFT LANDED WITHOUT INCIDENT. MAINTENANCE REPLACED THE O-RINGS AT JOINTS 11 AND 15 IN THE BLEED 1 SYSTEM. OPERATIONAL AND LEAK CHECKS WERE GOOD WITH NO FURTHER DEFECTS NOTED.