As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
(CAN) WHILE IN CRUISE FLIGHT AT FL 280, THE CABIN PRESSURE STARTED TO DECREASE. SHORTLY THEREAFTER A LOUD BANG WAS HEARD AND THE CABIN PRESSURE BEGAN TO RAPIDLY DECREASE. AN EMERGENCY DECENT WAS CARRIED OUT AND THE AIRCRAFT LANDED WITHOUT FURTHER INCIDENT. INVESTIGATION REVEALED THAT THE PRESSURIZATION DUCT DOWNSTREAM OF THE WATER SEPARATOR HAD BECOME DISCONNECTED.