What was found
CLE - FLT 4043 - CREW REPORTED WHILE CLIMBING THROUGH 5,000 FEET WITH ANTI-ICE ON, THEY RECEIVED A LEFT HAND ENGINE BLEED LEAK ON EICAS AND A RED LEAK MESSAGE IN BLEED SWITCH ON OVERHEAD PANEL. AIRCRAFT RETURNED TO FIELD WITHOUT FURTHER INCIDENT. MAINTENANCE REMOVED AND REPLACED AN O-RING IN THE VERTICAL STAB DEICE DUCT COUPLING IAW EMB-145 MM 30-12-07, OPERATIONAL AND LEAK CHECKS WERE SATISFACTORY. AIRCRAFT RELEASED FOR SERVICE. ACFT TT: 406.6 HOURS. TOTAL CYCLES: 294. (X)