As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
(CAN) RETURNED TO YHM DUE TO LOSS OF 'A' SYS HYDRAULIC FLUID. SHORTLY AFTER TAKEOFF OUT OF YHM CREW NOTICED HYD MASTER CAUTION LIGHT HAD ILLUMIINATED, THE 'A' SYS HYDRAULIC FLUID HAD DEPLETED & THE HYDRAULIC LOW PRESSURE WARNING LIGHTS HAD ILLUMINATED. CREW LEVELED OFF AT 10,000 FT. &CONDUCTED 'NON-NORMAL CHECKLIST' THEN SHUTDOWN 'A' SYS HYDRAULIC PUMPS. A/C RETURNED TO YHM & LANDED WITHOUT INCIDENT.