As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AFT EVAPORATOR SCROLL ASSY OVER HEATED AND BURNED A HOLE THROUGH IT IN-FLIGHT. A FLAME WAS SEEN AND WAS PUT OUT WITH PORTABLE FIRE EXTINGUISHER. UPON INSPECTION, A SALT PACK WAS DISCOVERED WEDGED AGAINST A RESISTOR ASSY INSIDE OF SCROLL ASSY AND CAUSED A HOT SPOT.