As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
PDIS 907 21-32 1705321 21APR19 PHL CLOSE LOSS OF CABIN PRESSURE AT 16,000. WHEN ON AUTOMATIC MODE. AND MANUAL ERRATIC. MX DEACTIVATED BOTH OUTFLOW VALVE IAW 21-31-03-040-801-A. FACT 22APR19 10:30 PHL PER THE FDR DOWNLOAD NO LOSS OF CABIN PRESSURE WAS R ECORDED DURING FLIGHT.REACTIVATED BOTH OUTFLOW VLV A S REQUIRED.PERFORM PRESSURIZATION OPS CK IAW EMB 145 AMM 21-32-00 OPS CK GOOD AT THIS TIME.CLEAR MEL