As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
FAT - CREW RETURNED TO FIELD WHEN PASSING THROUGH 10,500 FEET AFTER A RIGHT BLEED DUCT WARNING WAS RECEIVED. MAINTENANCE LEAK CHECKED THE RIGHT BLEED DUCT. NO LEAKS WERE DETECTED. THE MDC WAS INTERROGATED AND SHOWED THE RIGHT BLEED LOOP-B FAILED, OPEN CIRCUIT. REPOSITIONED BLEED LOOP. PERFORMED TEST OF BLEED LEAK DETECTION AND WARNING SYSTEM AND REPLACED AILC. OPERATIONAL CHECK WAS GOOD, NO DEFECTS NOTED. AIRCRAFT RETURNED TO SERVICE.