As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
STRONG BURNING ODOR IN COCKPIT, SMELLED ELECTRICALLY FOLLOWED BY LOSS OF NR 2 FMS. LOUDER THAN NORMAL FAN TYPE SOUND IN COCKPIT. RAN APU AND AVIONICS SYSTEM FOR ABOUT 45 MINS TO 1 HR. NO SMELL IN COCKPIT NOTED. 1 FAN SEEMS SLIGHTLY LOUDER. RAN WINDSHIELD HEAT FOR 5 MINS. NO ODOR APPEARED - NO FMS FAILURE NOTED, ALL WORK IAW MM 34-60-00.