As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
CAS - DURING PRE-FLIGHT, CREW REPORTED CAS MESSAGE, HYD AUXILIARY QUANTITY LOW. AIRCRAFT WAS FERRIED TO HOT MAINTENANCE BASE. MECHANIC FOUND AUXILIARY RESERVOIR FLOAT HAD A HOLE IN IT. REMOVED AND REPLACED AUXILIARY RESERVOIR FLOAT ASSEMBLY. PERFORMED OPS CHECK OF SYSTEM. ALL CHECKS NORMAL. NO LEAKS NOTED. AIRRAFT WAS RETURNED TO SERVICE.