As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
(CAN) ON CLIMBOUT AT ABOUT 14000 ALTITUDE, THE APU SYSTEM FAIL ANNUNCIATOR CAME ON AND THE APU WAS SHUTDOWN. APPROXIMATELY 30 MINUTES LATER LEVEL AT FL 430 PASSENGERS ADVISED THE CREW FOR A LITTLE SMOKE IN CABIN. A FINE GREY ENVIRONMENTAL SMOKE/HAZE WAS OBSERVED IN CABIN WITH BURNED OIL ODOR. THE CREW ELECTED TO INITIATE 3000 FPM DESCENT.