As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
SHORTLY AFTER TAKEOFF RECEIVED AN AIR COND CAUTION AND LEFT BLEED AIR LEAK. COMPLETED ARH AND LEFT BLEED AIR LEAK WENT OUT. RETURNED TO MSP INSPECTED LT RUBBER DUCT CONNECTIONS, FOUND UPPER CLAMP OFF. REPOSITIONED CLAMP, RAN ENGINE OPS AND LEAK CHECKS GOOD IAW AMM 36-11-35-04.