As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AIRCRAFT WAS NOT GROUNDED: AIRCRAFT MASTER CAUTION ILLUMINATED - INERTIAL REFERENCE SYSTEM GPS LIGHT ILLUMINATED ON OVERHEAD PANEL. FLIGHT MANAGEMENT COMPUTER SCRATCH PAD DISPLAY INVALID L - GPS AND INVALID R- GPS. FLIGHT DIVERTED TO MEM. REMOVED AND REPLACED BOTH GPS ANTENNAS, M2103 (AALA202301139418) AND M2102 (AALA202301130343).