As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING TAKEOFF ON INITIAL CLIMB-OUT, THE CREW RECEIVED A MASTER WARNING OF A BLEED 1 LEAK. THE CREW RAN THE QRH AND ISOLATED THE PROBLEM AND THE MESSAGE CLEARED. THEY ELECTED TO RETURN TO THE FIELD DUE TO FORECASTED ICING ON THE ROUTE OF FLIGHT. A NORMAL LANDING WAS PERFORMED WITHOUT INCIDENT. UPON INSPECTION BY MAINTENANCE THE E1 BLEED LINE BETWEEN THE PRSOV AND THE BLEED VALVE WERE FOUND TO BE MISALIGNED AND LEAKING. THE LINE COULD NOT BE PROPERLY POSITIONED AND WAS REPLACED.