As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
CABIN ALTITUDE LIGHT ILLUMINATED IN FLIGHT WITH ACCOMPANYING CABIN DECOMPRESSION, UNABLE TO MANUALY MAINTAIN CABIN PRESSURE. PERFORMED FIM TASK 21-31 TASK 823 LEFT PACK PRESSURE SYSTEM WITHIN THE CHART ALSO DUAL PACK PRESSURIZE SYSTEM LEAK DOWN WAS HIGH ON THE GOOD SIDE. OF THE GRAPH OK FOR SERVICE.