What was found
LOST REFUELING DOOR WHILE IN-FLIGHT. AIRCRAFT WAS FUELED IN CYYZ (TORONTO). CREW OBSERVED DOOR SECURED DURING THEIR PRE-FLIGHT. DURING DESCENT OVER EASTERN MICHIGAN FOR LANDING AT KPWK THE CREW REPORTED A VIBRATION AND BRIEF ''FUELING'' LIGHT. MAINT IN KPWK INSTALLED A SERVICEABLE REFUELING DOOR AND ACFT WAS FLOWN TO KLIT DASSAULT SERVICE CENTER FOR INSTALLATION OF A NEW DOOR ASSY. OPERATOR IS TRYING TO OBTAIN AN UPDATED DOOR WITH IMPROVED LATCHES AS DESCRIBED IN DASSAULT AVIATION F50/50EX SERVICE NEWSLETTER NR 73, DATED DEC 1999. (X)