As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
ON LANDING, SMOKE IN CABIN AFTER APU START. AIRCRAFT LANDED WITHOUT INCIDENT. APU SHUTDOWN AND SMOKE DISSIPATED. INCIDENT APPEARS TO BE CAUSED BY RESIDUAL HYD FLUID LEFT FROM A PREVIOUS REPAIR. REPLACED COALESCER BAGS ON LT AND RT WATER SEPARATORS. CLEANED APU INELT DOORS. SYSTEM GROUND CHECKED NORMAL OPERATION. (M)