As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
IAH - FLT 3524 - THE CREW REPORTED THAT THE NR 1 BLEED DUCT LEAK LIGHT ILLUMINATED. THE CREW PERFORMED A PRECAUTIONARY NR 1 ENGINE SHUTDOWN, AND RETURNED TO IAH WHERE IT LANDED WITHOUT INCIDENT. MAINTENANCE INSPECTED THE AIRCRAFT AND FOUND THE NR 1 PRESSURE REGULATOR TO BE LEAKING. MAINTENANCE REMOVED AND REPLACED THE AFFECTED REGULATOR, AND THE AIRCRAFT WAS APPROVED FOR RETURN TO SERVICE. (M)