As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
RETURNED TO PHX DUE TO EXPERIENCING A-SYSTEM HYDRAULIC PRESSURE LOSS RIGHT AFTER GEAR RETRACTION. AIRCRAFT LANDED WITHOUT INCIDENT. INSPECTED AND FOUND NR 2 BRAKE ASSEMBLY QUICK DISCONNECT BLANKING PLUG SHEARED AND LEAKING. REMOVED AND REPLACED BRAKE ASSEMBLY, CHECKED FILTERS AND SERVICED HYDRAULIC SYSTEM PER BOEING M/M.