As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
HYDRAULIC FLUID LOW LIGHT ILLUMINATED APPROX 10 MIN AFTER INITIAL TAKEOFF, WHILE LEVEL AT 4000 FT MSL. WHILE REVIEWING HYD FLUID LOW ANNUNCIATOR ILLUMINATED CHECKLIST, THE HYDRAULIC PUMP TURNED ON AND RAN FOR 6 SECONDS. THE LDG GEAR RELAY CB POPPED AND THE PUMP SHUT OFF. CREW MANUALLY EXTENDED THE LANDING GEAR IAW THE MANUAL GEAR EXTENSION CHECKLIST SUCCESSFULLY. AIRCRAFT LANDED UNEVENTFULLY.