As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
PILOT REPORTED NR 2 HYDRAULIC LOW QUANTITY ON EICAS ON GROUND IN MSY. MAINTENANCE INSPECTED AND FOUND RUDDER POWER CONTROL UNIT TO BE LEAKING. REMOVED AND REPLACED RUDDER PCU IAW EMB 145 MM 27-22-03. OPERATIONALLY CHECKED AND LEAKED CHECKED GOOD. SERVICED NR 2 HYDRAULIC SYSTEM IAW EMB 145 AMM 12-13-01. AIRCRAFT RETURNED TO SERVICE. RUDDER PCU MISSING BOLTS CAUSING LEAKAGE.