As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
D: RH RECIRC FAN INOPC: MEL 21-24-1ACAT: 'C' DUE 6/16/23AFTER POWERING UP AIRPLANE IT€™S SMELLED LIKE A ELECTRICAL FIRE. THROUGH OUT THE CABIN AND FLIGHT DECK (FLT 3784 FILED OPEN)JUN 06, 2023 STATION: TUS--PERFORMED TROUBLESHOOT OF SMELL IN CABIN AND FLIGHT DECK PER ERJ 175 FIM 21-22-00. FOUND RH RECIRC FAN INOP. DEFERRED RH RECIRC FAN PER ERJ 175 MEL 21-24-1A. MX ACTIONS COMPLIED WITH. PLACARDS INSTALLED.