What was found
PDX FLIGHT 2373 SMOKE IN CABIN FROM APU. MAINTENANCE RAN APU FOR THREE HOURS, NO SMOKE OR ODOR. COULD NOT DUPLICATE PROBLEM. NO PARTS REPLACED. OPERATIONAL CHECKED GOOD. AIRCRAFT RETURNED TO SERVICE.
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
PDX FLIGHT 2373 SMOKE IN CABIN FROM APU. MAINTENANCE RAN APU FOR THREE HOURS, NO SMOKE OR ODOR. COULD NOT DUPLICATE PROBLEM. NO PARTS REPLACED. OPERATIONAL CHECKED GOOD. AIRCRAFT RETURNED TO SERVICE.