As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
RETURN TO FIELD DUE TO A DUAL ENGINE BLEED PROBLEM. *S/D* ADJUSTED RT BLEED LEAK DETECTION LOOP IN RT PACK BAY THAT WAS CONTACTING A DUCT CLAMP. THE BLEED LEAK WARNING RESULTED IN AUTOMATIC SHUTDOWN OF THE ASSOCIATED BLEED SYSTEM. CONCURRENTLY THE AIRCRAFT EXPERIENCED A MALFUNCTION OF THE NR 1 PRV - RESULTING IN LOSS OF PNEUMATIC SUPPLY FROM THE LT SYSTEM - THUS THE DUAL FAILURE. THE NR 1 PRV WAS REPLACED AND NO FURTHER BLEED DISCREPANCIES HAVE BEEN REPORTED.