What was found
NIGHT TIME DEPARTURE WITH 34 PAXS ON BOARD. CAPTAIN REPORTED AT APPROX 1-2 MINS AFTER TAKEOFF, A ENG 2 BLD LEAK APPEARED ON THE EICAS FOLLOWED BY A LEAK IN RED ON THE NR 2 ENG BLEED SWITCH. CAPTAIN DIRECTED THAT THE NR 2 ENG BLEED SWITCH BE TURNED OFF, CORRECTED THE ISSUE. CAPTAIN DECLARED AN EMER & RETURNED BACK. ACFT LANDING WAS UNEVENTFUL. COMPANY MX CONTROL NOTIFIED ACFT CONTRACT MX & UPON THEIR ARRIVAL FOUND A COUPLING TO THE NR 2 HIGH STAGE BLEED VLV, HAD FAILED, VLV WAS NEWLY INSTALLED. A NEW COUPLING WAS ORDERED & INSTALLED NR 2 ENG PERFORMANCE CHECKS WERE CONDUCTED WITH NO DISCREPANCIES. ACFT WAS RETURNED TO SERVICE ON 3 MARCH 2016.