What was found
EN ROUTE, ACRID FUMES NOTED IN FIGHT DECK AND CABIN. COMPLETED CHECKLIST. THE RIGHT RE-CIRCULATION FAN WAS OBSERVED TO BE OFF. DIVERTED MSY AND LANDED WITHOUT INCIDENT. CLEANED LOOSE DUST FROM RE-CIRCULATION FAN FILTER. REINSTALLED CANNON PLUG ON RE-CIRCULATION FAN. RESET CIRCUIT BREAKERS. PERFORMED RE-CIRCULATION TEST AS REQUIRED. SYSTEM GROUND CHECKED NORMAL OPERATION. (M)