As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AIRCRAFT WAS GROUNDED: PILOT RETURNED TO CLT ON ACCOUNT OF GREEN HYDRAULICS SYSTEM ISSUE. AFTER TAKEOFF, NOSE GEAR FAILED TO RETRACT, FOLLOWED BY HY G RSVE LO LVL MESSAGE ON ECAM. EMERGENCY DECLARED. FLIGHT LANDED WITHOUT INCIDENT. MAINTENANCE FOUND A NLG HOSE BLOWN OUT. REMOVED AND REPLACED THE HOSE IAW AMM 32-31-27. NLG FUNCTION CHECKS GOOD. LEAK CHECK GOOD.