As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
RIGHT ENGINE DRIVE ILLUMINATED ON CLIMB-OUT. APU FLAMED OUT TWICE AFTER INFLIGHT START. RETURNED TO DFW AND LANDED WITHOUT INCIDENT. REPLACED RIGHT ENGINE INTEGRATED DRIVE GENERATOR AND P2 SENSOR. SYSTEM GROUND CHECKED NORMAL OPERATION.