As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
SHIP 1813 RAMP SUPERVISOR REPORTS ABUNDANCE OF SPARKS FROM APU TAIL CONE UPON APU START PRIOR TO MOVING AIRCRAFT. DUE TO REPORTS OF POSSIBLE INTERNAL 4900FAILURE OF APU, REMOVED & REPLACED APU ASSY AS PER W/C 74-4910-9-0010. OPS CHECK OK. (5807842)