As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AIRCRAFT HAD AN RAD ALT GPWS FAIL DURING CRUISE. CREW THEN PERFORMED AN UNSCHEDULE LANDING INTO KDAY. MAINTENANCE CALLED OUT AND INSPECTED AND DEFERRED THE RAD ALT, DEFERRED THE GPWS AND TCAS BECAUSE OF DEFERRING THE RAD ALT, OPS CHECK GOOD.