What happened
The FAA’s narrative, in sentence case. The FAA writes it in capitals and removes private details.
(-23) Federal express - flt. 684, 03/18/02004 after level off at flight level 31000 feet out of rochester, new york on route to memphis, TN, the flight crew received an advisory message indication of an air conditioning system concern. Shortly thereafter an indication of smoke occurred withing the avionics bay. The flight crew donned oxygen and performed the smoke elimination procedure. This included shutting off the air conditioning system by pulling associated circuit breakers. After a short period of time the avionics smoke indication went away. The flight crew diverted to Louisville, KY. The flight crew indicated that at no time did they not have full control of aircraft. No flight control issues were identified. The crew did not have the benefit of modern navigation due to the emergency procedure involving the pulling of circuit breakers for those systems. However, upon completion of the emergency checklist, minimum navigational systems were restored. The flight crew advised the aircraft was deiced in rochester, NY prior to departure. The preliminary interview with fedex maintenance is that the smoke indication was a result of deice fluid ingestion into the aircraft air conditioning system. The aircraft was still dripping from all areas with deice fluid as it sat on the ramp at the fedex facility in Louisville. Fedex maintenance is in the process of investigating other possibilities in accordance with their approved maintenance program.
As the FAA filed it
(-23) FEDERAL EXPRESS - FLT. 684, 03/18/02004 AFTER LEVEL OFF AT FLIGHT LEVEL 31000 FEET OUT OF ROCHESTER, NEW YORK ON ROUTE TO MEMPHIS, TN, THE FLIGHT CREW RECEIVED AN ADVISORY MESSAGE INDICATION OF AN AIR CONDITIONING SYSTEM CONCERN. SHORTLY THEREAFTER AN INDICATION OF SMOKE OCCURRED WITHING THE AVIONICS BAY. THE FLIGHT CREW DONNED OXYGEN AND PERFORMED THE SMOKE ELIMINATION PROCEDURE. THIS INCLUDED SHUTTING OFF THE AIR CONDITIONING SYSTEM BY PULLING ASSOCIATED CIRCUIT BREAKERS. AFTER A SHORT PERIOD OF TIME THE AVIONICS SMOKE INDICATION WENT AWAY. THE FLIGHT CREW DIVERTED TO LOUISVILLE, KY. THE FLIGHT CREW INDICATED THAT AT NO TIME DID THEY NOT HAVE FULL CONTROL OF AIRCRAFT. NO FLIGHT CONTROL ISSUES WERE IDENTIFIED. THE CREW DID NOT HAVE THE BENEFIT OF MODERN NAVIGATION DUE TO THE EMERGENCY PROCEDURE INVOLVING THE PULLING OF CIRCUIT BREAKERS FOR THOSE SYSTEMS. HOWEVER, UPON COMPLETION OF THE EMERGENCY CHECKLIST, MINIMUM NAVIGATIONAL SYSTEMS WERE RESTORED. THE FLIGHT CREW ADVISED THE AIRCRAFT WAS DEICED IN ROCHESTER, NY PRIOR TO DEPARTURE. THE PRELIMINARY INTERVIEW WITH FEDEX MAINTENANCE IS THAT THE SMOKE INDICATION WAS A RESULT OF DEICE FLUID INGESTION INTO THE AIRCRAFT AIR CONDITIONING SYSTEM. THE AIRCRAFT WAS STILL DRIPPING FROM ALL AREAS WITH DEICE FLUID AS IT SAT ON THE RAMP AT THE FEDEX FACILITY IN LOUISVILLE. FEDEX MAINTENANCE IS IN THE PROCESS OF INVESTIGATING OTHER POSSIBILITIES IN ACCORDANCE WITH THEIR APPROVED MAINTENANCE PROGRAM.