As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AIRCRAFT WAS GROUNDED: AN EMERGENCY WAS DECLARED DUE TO: LOSS OF SYSTEM-B HYDRAULICS IN FLIGHT; AIRCRAFT PERFOMRED GO AROUND AND LANDED SAFELY AT DFW.**SUPPLEMENTAL REPORT (AALA202404095208): UPON INVESTIGATION FOUND LEAK FROM MAIN RUDDER (PCU)-POWER CONTROL UNIT AND REMOVED AND REPLACED RUDDER PCU. PER JOBCARD 08L30027004**(CLOSED).