What was found
BLEED 1 LEAK FOLLOWED BY FAIL. BLEED 1 LEAK DESCENDING THROUGH FL210. RAN QRH PROCEDURE AND DID NOT CLEAR.DUMP BUTTON STILL PUSHED IN. BLEED 1 LEAK POPPED UP AGAIN DURING TAXI IN EMERGENCY DECLARED. INTEROGATED CMC AND FOUND FAULT CODE 36216007AM1 AND 36216007AM2. FOLLOWED FIM 36-21-00-810-813A BLOCKS 1,2,3 AND 8, FOUND CERAMIC INSERT CRACKED IN LH BLEED/PACK ODS LOOP 3 CHANNEL 2. RAR CERAMIC INSERT IN LH BLEED/ PACK ODS LOOP 3 CHANNEL 2 IAW AMM 36-20-01/400. FAULT CLEARED AND OPS CHK GOOD FOR CHANNEL.REF AML LOG PAGE # FOR TDMI NUMBER FOR LH BLEED/PACK ODS LOOP 3 CHANNEL 1.NO FURTHER DEFECTS NOTED.