As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DUCT LEAK WARNING AFTER TAKEOFF STAYS ON THREE MINUTES. LEFT ENGINE SHUT DOWN AND RETURNED TO LAX FOR LANDING. REPLACED TUBE ASSEMBLY FORWARD OF LEFT HEAT EXCHANGER ALSO CHANGED CLAMP ASSEMBLY. RAN ENGINE AT 100 PERCENT FOR SEVERAL MINUTES. OPS CHECKS GOOD. NO DUCT LEAK WARNINGS.