What was found
WITH ENGINE PNEUMATIC SET AT CLIMB THRUST. RECEIVED ENG 1 BLEED LEAK ANNUNCIATION. ANNUNCIATION EXTINGUISHED AFTER APPLYING ABNORMAL CHECKLIST.-C/A-FOUND HOLE IN PACK 1 FLEX DUCT AT DUEL TEMP CONTROL VALVE, REMOVED AND REPLACED FLEX DUCT, LEAK CHECK GOOD, IAW EMB AMM 21-60-01. BLEED 1 LEAK CHECK GOOD, IAW EMB AMM 36-00-00.