As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
SMF - AIRCRAFT LOST CABIN PRESSURIZATION WITH SYSTEM IN AUTO MODE. OXYGEN MASKS DEPLOYED. MAINTENANCE DEFERRED AUTO MODE FOR PRESSURIZATION PER MEL 21-31-1. REINSTALLED OXYGEN MASKS. AIRCRAFT RETURNED TO SERVICE. MAINTENANCE SUBSEQUENTLY CLEARED DEFERRAL BY REPLACING AUTO PRESSURIZATION CONTROLLER. OPERATIONAL CHECK SATISFACTORY. (M)