As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
CLAMP ATTACHING SLEEVE TO WATER SEPERATOR WORKED LOOSE CAUSING SLEEVE TO LEAK AT 5.0 PSI. CREW NOTED LOSS OF COLD AIR FLOW AND INABILITY TO MAINTAIN CABIN PRESSURE IN FULL COLD. PRESSURIZATION WORKED NORMALLY WITH CABIN TEMPS SETTINGS ABOVE FULL COLD. CLAMP MAY HAVE BEEN STRESSED BY REPEATED OVER LIGHTENING. MFG SPECIFIES 20-25 INCH POUNDS TORQUE.