What was found
(CAN)DURING PUSH BACK, CABIN FILLED WITH SMOKE, BOTH REAR SMOKE DETECTORS SOUNDED. MAINTENANCE FOUND PROBLEM CAUSED BY A.P.U.AUXILIARY POWER UNIT REPLACED.LEAK AND OPERATIONAL CHECK CARRIED OUT.
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
(CAN)DURING PUSH BACK, CABIN FILLED WITH SMOKE, BOTH REAR SMOKE DETECTORS SOUNDED. MAINTENANCE FOUND PROBLEM CAUSED BY A.P.U.AUXILIARY POWER UNIT REPLACED.LEAK AND OPERATIONAL CHECK CARRIED OUT.