As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
FLT#1673, JFK-BNA (AIRCRAFT DIVERTED TO ATL) ' L BLEED FAIL 36 L BLEED FAIL - L PRESS REG SOV INOP ( ENGINE BLEED PRESSURE REGULATING SHUTOFF VALVE (PRSOV) LEFT SIDE CBV OPERATIVE ); W/REF TO FIM 36-11-02-01AAA-421A-A. PERFORMED BAS IBIT THROUGH IASC 1A/1B, NO FUAL MSG PRESENT. HIS CLRS MDDR. MX4 UPDATED.'