As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
(CAN) SMOKE IN CABIN WHILE USING LEFT AIR CONDITIONING PACK AND A.P.U.MAINTENANCE INVESTIGATION REVEALED LEFT AIR CONDITIONING PACK LEAKING AT REAR OF HEAT EXCHANGER FLEX COUPLING. NEW COOLING TURBINE INSTALLED AND OPERATIONALLY CHECKED.