As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
FLT#953, JFK-DJT-RTF. 36 L BLEED FAIL. L PRESS REG SOV INOP. ( ENGINE BLEED PRESSURE REGULATING SHUTOFF VALVE (PRSOV) LEFT SIDE CBV OPERATIVE ). ACCOMPLISHED METHOD 1. VERIFIED NO EVIDENCE OF EXCESSIVE HPV LEAKAGE PER MEL 36-12-01E. A/C OK TO CONT. CROSSBLEED VALVE (CBV) VERIFIED OPERATIVE PER MEL 36-12-01E. PLACED ON MEL 36-12-01E. CAT. C. MDDR 633465. MX4 UPDATED. PLACARD INST. MCC NOTIFIED.; (SUPPLEMENTAL INFORMATION TO FOLLOW).