What was found
F.O.D FOUND WITHIN THE LH WING FUEL TANK AT ACCESS PANEL LOCATION 550CB. THE F.O.D IS AN EXTENDABLE MIRROR BRANDED WITH 'CARICA'. THE AIRCRAFT WAS IN FOR SCHEDULED MAINTENANCE 400 HOUR / 36 MONTH CHECKS. DURING INTERNAL GENERAL VISUAL INSPECTIONS OF THE WING FROM WS148 TO WS353 AND PRIOR TO CLOSURE OF THE PANEL 550CB THE MIRROR WAS FOUND BEHIND THE STRINGER. THE MIRROR IS COATED IN FUEL WHICH INDICATES ITS BEEN IN THERE FOR SOME TIME. IT WAS CONFIRMED THAT THE MIRROR IS NOT OF BOMBARDIER SERVICES (UK) LTD OR ITS STAFF.