As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
IN CRUISE, MULTIPLE CAS MESSAGES AND X INDICATIONS ON ENGINE, ETC. NOSE GEAR INDICATION UNSAFE WHILE RETRACTED AND EXTENDED. WE PERFORMED A LOW PASS AND TOWER CONFIRMED ALL GEAR APPEARED DOWN. EMERGENCY EXTENSION WAS PULLED PER THE CHECKLIST. SOME CAS MESSAGES WOULD CLEAR AND OTHERS WOULD APPEAR. IT SEEMED VERY RANDOM. REMOVED GEA AND INSTALLED REPAIRED UNIT. REF AMM 31-41-03. OPS CHECKS GOOD.