As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
HYDRAULIC SYSTEM NR 3 LOST ALL FLUID. FOUND NR 3 PRESSURE MANIFOLD ASSEMBLY LEAKING. REMOVED AND REPLACED NR 3 HYDRAULIC PRESSURE MANIFOLD ASSEMBLY IAW CRJ MM 29-11-05. OPS CHECK GOOD, LEAK CHECK GOOD. P/N OFF: ADA686-301 S/N OFF: 1580