As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
OWNER REQUESTED PRESSURE DECAY TEST IAW AD. PRESSURE COULD NOT BE MAINTAINED. REMOVED HEATER, DISCOVERED LARGE CRACK AT AFT, LOWER WALL OF COMBUSTION CHAMBER, ALONG WELD LINE. THIS HEATER WAS INSTALLED 11/1/99 WITH ONLY 531.3 TT HEATER HOURS ON PART. FACTORY REBUILT UNIT INSTALLED WITH NEW CERAMIC COATED LINER TO PREVENT CRACKING. HEATER WAS REPLACED WITH FACTORY WARRANTY UNIT, AND SENT BACK TO FACTORY FOR EXCHANGE.