As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
THE CREW REPORTED DURING THE PREFLIGHT FOUND DU NR 3 BLANK/INOP. TROUBLESHOT AND FOUND THE NR 3 DISPLAY UNIT TO BE DEFECTIVE. REMOVED THE DISPLAY UNIT P/N 7014300-901 S/N 0808H441. INSTALLED A NEW DISPLAY UNIT FUNCTIONAL CHECKS SATISFACTORY. REF: LEAR 45 AMM 31-60-00. NOTE: DU THAT WAS REMOVED WAS REPAIRED AND INSTALLED INTO THIS AIRCRAFT JULY 2010. TIME IN SERVICE BEFORE UNIT FAILED 320.6 HRS