As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
HSI READING 25 DEGREES OFF WHILE EN ROUTE TO KSPS. THE PILOT REQUESTED DIVERTING KDFW, ATC ESCALATED TO AN EMERGENCY CATEGORY AND DISPATCHED DFW ARFF. AIRCRAFT SAFELY LANDED WITHOUT INCIDENT. DFW MAINTENANCE TROUBLESHOT REMOVED AND REPLACED #1 DIRECTION GYRO/SYNCHRONIZER. SYSTEM OPS CHECK GOOD.