As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AIRCRAFT NOT GROUNDED. DURING TAKEOFF FLIGHT CREW NOTED THAT APU FAILED TO SHUT DOWN AS SELECTED. ABORTED TAKEOFF. MAINTENANCE ACCOMPLISHED FIM 4910 TASK 801 DUE TO FAULT CODE 49-11019. ACCOMPLISHED APU START AND SHUT DOWN SEVERAL TIMES. SYSTEM CHECKS NORMAL.