B757 CREW ACCEPTS ILS RWY 13 APCH TO CYQX AFTER PLANNING LOC (BC) TO RWY 31. DUE TO RWY CHANGE; TAIL WIND; AND REQUIREMENT FOR ENGINE ANTI-ICE; CREW FLIES AN UNSTABILIZED APCH AND LANDS.

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AS CAPT THIS WAS MY 3RD EUROPEAN TRIP IN 9 DAYS AND I FELT TIRED STARTING THE TRIP. THE CO-PILOT WAS STARTING HIS FIRST TRIP OF THE MONTH AND WAS 'FRESH' AND RESTED. THE CO-PILOT FLEW THE FIRST LEG TO GANDER AND I EXPLAINED TO HIM MY PREVIOUS EXPERIENCES AND HOW FUEL CONSERVATION WAS IMPORTANT. A FUEL EFFICIENT FLT REQUIRES PROPERLY PLANNED APPROACHES AND LANDINGS SO AS TO AVOID PROLONGED LEVEL FLT PRIOR TO DSCNT AND LNDG. THE FLT INBOUND TO CYQX WAS UNEVENTFUL UNTIL WITHIN 30 MILES OF THE ARPT. I HAD LISTENED TO THE ATIS AND DETERMINED THAT THE APCH IN USE WAS THE BACK COURSE FOR RWY 31 AND THE WINDS WERE OUT OF THE WEST. WE HAD SET UP FOR THE BACK COURSE FOR RWY 31 BUT DURING OUR INITIAL APCH TO THE ARPT WAS CONTACTED BY THE CTL TOWER TO INFORM US THAT THE ILS FOR RWY 13 WAS ALSO AVAILABLE AND WOULD WE LIKE THAT APCH. I ASKED THE CO-PILOT IF HE THOUGHT IT WAS OK AND THE REPLY WAS YES AND I REPLIED TO THE CTLR WITH AFFIRMATIVE REGARDING THE ILS TO RWY 13. THIS FLT WAS THEN CLRED FOR THE ILS RWY 13 AND CALL THE TOWER. THE ACFT WAS QUICKLY CONFIGURED AND DESCENDED TOWARD THE FINAL APCH FIX. SEVERAL IMPORTANT FACTS WERE OVERLOOKED BY MYSELF INCLUDING THE FACT THAT THE FINAL APCH FIX IS ONLY 3.6 MILES FROM THE END OF THE RWY AND AN ON GLIDESLOPE SIGNAL AT THE FINAL APCH FIX IS 1580 FT MSL AND 1092 FT ABOVE THE ARPT. WHILE NOT PART OF THE INSTRUMENTS USED FOR THIS TYPE OF APCH I WAS DISTRACTED BY THE RADIO ALTIMETER AUDIO ANNOUNCEMENTS (OVER UNEVEN TERRAIN) AT 1000 FT WHEN ACTUALLY THE ACFT WAS SIGNIFICANTLY CLOSER TO THE ARPT ELEVATION AND LED ME TO A FALSE SENSE OF SECURITY THINKING THAT THE ACFT WAS 'NEARLY CONFIGURED' AT THAT POINT. THE WIND WHILE ONLY A 5 KNOT TAIL WIND AT THE SURFACE WAS NEARLY A 20 KNOT TAIL WIND AT THE FINAL APCH FIX INCREASING THE GND SPEED AND DSCNT RATE TO STAY ON THE GLIDE PATH. THE WX AT THE TIME WAS LIGHT RAIN AND SURFACE TEMPERATURES AROUND 3C REQUIRING THAT THE ENGINE HEAT BE ON DURING THE APCH. THE COMBINATION OF TAIL WIND; AND ENGINE ANTI ICE ON; PREVENTED THE ACFT FROM BEING STABILIZED ON APCH UNTIL MUCH LOWER THAN THE 1;000 FOOT FIGURE REQUIRING A GAR IF NOT STABLE. THE ACFT WAS LANDED BY THE CO-PILOT OUT OF THIS APCH IN THE LNDG ZONE AND STOPPED WITHIN THE NORMAL STOPPING AREA ON THE 8900 FOOT LONG RWY.