As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AFTER GEAR RETRACTION RECIEVED A NOSE GEAR GREEN LIGHT AND GEAR UNSAFE LIGHT. THE FOLLOWING CAS MESSAGE WERE PRESENT, HYDRAULIC VOLUME LOW "A" HYDRAULIC PUMP FAIL "A" & HYDRAULIC PTU FAIL. "A" SIDE QUANTITY ZERO AND FLUID VISIBLE ON BOTH SIDES OF FUSELAGE. NOSE WHEEL STEERING HOSE REMOVED AND REPLACED IAW CESSNA CITATION 750 MAINTENANCE MANUAL CHAP 12-10-15. BRAKE SYSTEM BLED IAW 750 MM CHAP 32-42-00 & HYDRALIC SYSTEM BLED IAW 750 MM 29-10-00. OPERATIONAL & LEAK CHECKS GOOD.