As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
FLT 6072 - ON APPROACH TO PHX, THE CAPTAIN STARTED THE APU AND HAD AN OIL PRESSURE LOW CAUTION MSG IN FLIGHT, FOLLOWED BY A SMALL AMOUNT OF SMOKE IN COCKPIT. CREW SHUT DOWN THE APU AND LANDED WITHOUT INCIDENT. MAINTENANCE DEFERRED THE APU AND THE AIRCRAFT WAS RETURNED TO SERVICE. APU REMOVED AND REPLACED. OP CHECKS GOOD. (M)