As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AIRCRAFT EXPERIENCED NR 2 HYDRAULIC SYSTEM FLUID LOSS AFTER DEPARTURE FROM GYM EN ROUTE TO PHX. CAPTAIN DECLARED AN EMERGENCY AND RETURNED TO FIELD. CURRENTLY AWAITING ARRIVAL OF CONTACT MAINTENANCE TO TROUBLESHOOT AND ISOLATE SOURCE OF LEAK. R&R HYDRAULIC LINE. GEAR SWING AND LEAK CHECK.