As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
FLT CREW REPORTED RECIRCULATION FAN CIRCUIT BREAKERS 'POPPED' IN FLIGHT. CREW RETURNED TO RENO WITHOUT INCIDENT. RENO MAINTENANCE DEFERRED RECIRCULATION FAN PER MEL 21-43-DMI NR 39. PULLED AND COLLARD C/B'S. CANNON PLUG DISCONNECTED AND STOWED. AIRCRAFT RELEASED AND CONTINUED ON ITS WAY. CLEARED DMI NR 39 BY INSTALLING A SERVICEABLE UNIT, OPS CHECK GOOD. (M)