As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING CRUISE FLIGHT AMBER CAS MESSAGE HYD A VOL LOW APPEARED.QUANTITY WAS 16% AND FALLING CREW ACCOMPLISHED CHECKLIST AND LANDED. FOUND LEFT T/R PRESSURE LINE IN AFT EQUIPMENT BY LEAKING. REMOVED AND REPLACED LINE WITH A NEW LINE ASSEMBLY. PERFORMED LEAK CHECKS OF HYD LINE & SERVICED HYD SYSTEM AND CYCLES LEFT T/R SEVERAL TIMES, NO DEFECTS NOTED. ALL WORK WAS DONE IAW CESSNA CITATION 750 M/M 20-10-01 AND 29-00-00.