As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING CLIMB AUTOPILOT FUNCTIONS WOULD NOT ENGAGE AND PILOT RETURNED TO KFXE. WHEN THE AIRCRAFT LANDED WE PERFORMED AN OPERATIONAL TEST OF THE AUTOPILOT SYSTEM AND WE WERE UNABLE TO DUPLICATE THE FAULT. WE SIGNED THE MAINTENANCE OFF AND THE AIRCRAFT HAS SINCE BEEN RETURNED TO SERVICE AND THE AUTOPILOT SYSTEM IS OPERATING CORRECTLY