As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING GROUND OPERATIONS WITH APU POWER AND BLEEDS ON CREW NOTED SMOKE IN CABIN. CREW PERFORMED APU SHUTDOWN AND UNLOADED PASSENGERS SAFELY. NO FURTHER INCIDENTS WRE REPORTED. SMOKE AND ISOLATED TO THE AUP AND AN MEL WAS ISSUED. REPLACED APU. OPERATIONAL CHECK GOOD. AIRCRAFT RETURNED TO SERVICE. (M)