As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
LGA - FLT 1381 - NR 1 AUTO PILOT CLICK OFF ON THE DESCENT, AT THE SAME TIME AUTO THROTTLES CLICK OFF. BOTH FMAS AND DFG PANELS WENT BLANK FOLLOWED QRH PROCEDURES SWITCH TO AUTO PILOT NR 2 AND SYSTEM WORKED FOR REMAINDER OF FLIGHT. REMOVED AND REPLACED NR 1 DFGC. PERFORMED RTS REF. (M)