As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
LEFT HAND CABIN INTERIOR UPPER CONDITIONED AIR DUCT WAS REMOVED FROM AIRCRAFT DUE TO AIR LEAKING FROM OUTBOARD OF DUCT. LEAKS WERE LOCATED DURING BENCH PRESSURE TESTING TO 5 PSI. REPAIRED LEAKS PER SPECIFICATIONS, PROBABLE CAUSE WOULD BE A MANUFACTURE DEFECT.