As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AMBER CAS MESSAGE FOR LT HYDRAULIC SYSTEM FAIL, DURING FLIGHT. THERE WAS A LOSS OF PRESSURE BUT NOT QUANITY. THE AUTOMATIC BACKUP PTU HYDRAULIC SYSTEM CAME ON AS DESIGNED. THERE WERE NO ADVERSE AFFECTS TO THE AIRCAFT WITH THE LOSS OF THE LEFT SYSTEM AS THE BACK UP PTU TOOK OVER. THE AICRAFT RETUNED TO DEPARTURE WHERE THE TECHNICIANS COULD TROUBLESHOOT AND REPAIR. RETURNING THE AIRCRAFT TO SERVICE.