As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DECLARED EMERGENCY, AUTO FAIL & ALT ON PRES PANEL ILLUMINATED AT 380 MSL AFTER A FEW SECONDS ALT LIGHT WENT OUT SWITCHED TO MANUAL AUT FLOW VALVE FULL CLOSED CABIN STILL CONTINUED TO CLIMB; O2 MASKS DEPLOYED AFTER OPENING, PAX O2 SWITCH NOTED DASHED LINES ON FLT&LND ALT WINDOWS. R&R CABIN OUTFLOW VALVE PER MM.