What was found
WHILE RUNNING APU ON GND WITH PACKS ON MTC NOTICED SMOKE IN THE CABIN AND SMOKE OUT OF APU EXHAUST. FOUND APU COMPRESSOR OUTLET DRIPPING OIL. REPLACED APU.
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
WHILE RUNNING APU ON GND WITH PACKS ON MTC NOTICED SMOKE IN THE CABIN AND SMOKE OUT OF APU EXHAUST. FOUND APU COMPRESSOR OUTLET DRIPPING OIL. REPLACED APU.