What was found
LOSS OF PRESSURIZATION AT FL 310. UNABLE TO MAINTAIN CABIN PRESS IN AUTO, MANUAL, OR STANDBY MODE. REMOVED AND REPLACED CABIN PRESS CONTROLLER PER MM 21-31-0. CABIN PRESSURE FUNCTION TEST NORMAL PER JRH 7-23.
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
LOSS OF PRESSURIZATION AT FL 310. UNABLE TO MAINTAIN CABIN PRESS IN AUTO, MANUAL, OR STANDBY MODE. REMOVED AND REPLACED CABIN PRESS CONTROLLER PER MM 21-31-0. CABIN PRESSURE FUNCTION TEST NORMAL PER JRH 7-23.