As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
NR 3 HYDRAULIC PUMP CAUTION LIGHT ILLUMINATED AFTER ENGINE START. NR 3 HYDRAULIC PRESSURE GAUGE INDICATED ZERO DURING NR 3 ISOLATION CHECK ON AFTER START FLOW. FOUND DCMP CIRCUIT BREAKER CB55 POPPED. RESET BREAKER. NO PARTS REPLACED. OPERATIONAL CHECK GOOD. AIRCRAFT RETURNED TO SERVICE.