As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
ON TAKEOFF DURING CLIMBOUT DUCT LEAK LIGHT CAME ON BUT WENT OFF WHEN RESPECTIVE BLEED WAS CLOSED. RETURNED TO LAX. LIGHT CAME BACK ON DURING APPROACH. LIGHT WENT OFF AFTER ENGINE WAS SHUTDOWN DURING TAXI. FOUND PRESSURE REGULATOR OVERBOARD DRAIN OFF OF LEFT SIDE. REPOSITIONED PRESSSURE REGULATOR AND REPLACED CLAMP. RAN ENGINE AND NO LEAKS WERE NOTED.