What was found
AIR TURNBACK / DECLARED EMERGENCY. LOST "A" SYSTEM HYDRAULICS ON TAKEOFF. REMOVED AND REPLACED MANUAL ISOLATION VALVE FOR NR 2 RUDDER PCU/YAW DAMPER PER MM.
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
AIR TURNBACK / DECLARED EMERGENCY. LOST "A" SYSTEM HYDRAULICS ON TAKEOFF. REMOVED AND REPLACED MANUAL ISOLATION VALVE FOR NR 2 RUDDER PCU/YAW DAMPER PER MM.