As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
SHIP 0176 -DIV/PRESS- TO MCI DURING MAINTENANCE REPOSITION FERRY DUE TO LOSS OF LT HPSOV AND "CABIN ALTITUDE WARNING" EICAS MESSAGE, INITIATED RAPID DECENT. CORRECTIVE ACTION: DEFERRED LT HPSOV PER MEL. REPAIRED AFT CARGO DOOR SEAL DEPRESSOR. (7054022)