What was found
CLIMBING THROUGH FL 180, WHILE PERFORMING THE ANTI-ICE TEST, BLD 1 LEAK WARNING. EA PROCEDURE COMPLIED WITH & RESOLVED ISSUE. DURING TROUBLESHOOTING, FOUND LEAK AT O & L ABOVE NR 1 BLEED AIR CHECK VLV. R & R BLEED AIR CHECK VLV & UPPER DUCT ASSEMBLY. ADJACENT TO CHECK VLV IAW AMM 36-11-09-000-002-A & 36-11-09-400-802-A. LEAK CHECKED & PERFORMED OPERATIONAL TEST OF THE BLEED AIR SYS IAW AMM 36-00-00-700-803A. NO LEAKS NOTED & NO FAULTS INDICATED. ACFT OK FOR SERVICE.