As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
UPON RESETTING REFRIG COMP CB A PLUME OF WHITE SMOKE BEGAN TO FLOW FROM EMPENNAGE EXHAUST FAN. CAUSTIC FUMES WERE ALSO NOTED. REMOVED AND REPLACED VAPOR-CYCLE COMPRESSOR/CONDENSER MODULE PER MM 21-51-00-201. OPS CHECKS NORMAL PER MM 21-51-00-201.