What was found
SUPPLEMENTAL BLEED 1 LEAK DURING CLIMB AT AROUND 10,200FT MESSAGE DISAPPEARED AFTER CHECLIST PROCEDURE WAS COMPLIED WITH ANTI-ICE OVERRIDE KNOB IN ''ALL'' POSITION AT THE TIME IN COMPLIANCE WITH 30-25. C/A- TROUBLE SHOT IAW FIM 36-20-00, REMOVED AND REPLACED NR 1 PACK DUAL TEMP CONTROL Y DUCT TUBE ASSY. IAW AMM 21-60-01. OPS AND LEAK TEST, GOOD IAW AMM 36-00-00 AND AMM 21-51-00. REMOVED AND REPLACED BLEED AIR DUCT ORINGS AT JOINT 11, 28, 30, 31 IAW AMM 36-11-10. LEAK CHECK GOOD IAW W/C 36-700-06. REMOVED AND REPLACED LT DUCT CLAMP ON CROSS BLEED VALVE IAW AMM 36-10-01. LEAK CHECK GOOD IAW W/C 36-700-06. PERFORMED OPC OF THE BLEED AIR SYSTEM IAW AMM TASK 36-00-00, OPC OF THE ANTI-ICING SYSTEM IAW AMM TASK 30-00-00 AND OPC OF THE COOLING SYSTEM IAW AMM TASK 21-51-00-- NO DEFECTS NOTED--OCK GOOD.