As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
(CAN) INTERMITTENT FAILURE, DISPLAY UNITS WOULD GIVE ----- OR 8888 INSTEAD OF CORRECT SPEED OR DISTANCE DISPLAY. NOTE: 2 CAUSES WERE FOUND: (1) INTERMITTENT FAILURE OF IL IN THE DME 40 UNIT. (2) GNS 530 CHANNELING WAS INCORRECTLY PROGRAMED CAUSING THE DME NOT TO FUNCTION ON SOME CHANNELS.