What was found
(CAN) WHILE THIS A/C WAS IN HANGAR FOR A SCHEDULED PHASE CHECK, IT WAS NOTICED BY A MECHANIC THAT THERE APPEARED TO BE FOREIGN MATERIAL STICKING OUT OF THE RUDDER BALANCE WEIGHT CUT-OUT SEAL. ON CLOSER INSPECT IT WAS FOUND TO BE TWO BAGS OF PNL ATTACHMENT HARDWARE AND A PARTS REMOVAL TAG SITTING ON WEB IN AREA OF BALANCE WEIGHT, MID-WAY UP VERTICAL STAB. INSPECT OF AREA REVEALED NO DAMAGE. THIS FOD WAS LEFT BEHIND DURING THE RECENT VISIT AT A MX FACILITY OUTSIDE OF CANADA. THIS IS SECOND FOD DISCOVERY ON A/C. SINCE THIS TIME WE HAVE INITIATED A FLEET CAMPAIGN TO CHECK BEHIND ALL FLT CONTROL ACCESS PANELS FOR FOD DURING THE NEXT OVERNIGHT VISITS TO OUR MX FACILITY. IN ADDITION, ALL OTHER ACCESS PANELS WILL B