What was found
WHILE SITTING AT GATE, CABIN FILLED WITH SMOKE. MTC DEPLANED THROUGH PASSENGERS RAN ENGINE FOR ONE HOUR TO CLEAR AIR DUCTING OF OIL SMELL AND DEFERRED APU PER MEL 49-01A.
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
WHILE SITTING AT GATE, CABIN FILLED WITH SMOKE. MTC DEPLANED THROUGH PASSENGERS RAN ENGINE FOR ONE HOUR TO CLEAR AIR DUCTING OF OIL SMELL AND DEFERRED APU PER MEL 49-01A.