ACR MLG PF USED WRONG PROFILE DESCENT CHART AND OVERSHOT ALT.

Narrative

ON A SCHEDULED ACR FLT FROM ERIE; PA; TO TORONTO; CANADA; WE WERE SWITCHED TO APCH CTL. WE HAD BEEN CRUISING AT 15000'. WE WERE THEN CLRED TO 11000' AND THE CAPT PUT THAT IN THE MCP. HE WAS USING AUTOPLT AND AUTOTHROTTLES; BUT WAS NOT USING THE FMS FOR NAV. WHILE IN THE DSCNT TO 11000' I TOLD HIM I WOULD BE OFF THE RADIO TO USE THE OTHER RADIO TO CALL COMPANY. WHEN I RETURNED TO ATC I SAW THAT HE HAD 8000' SET IN THE MCP. I ASKED IF WE WERE CLRED TO 8000' AND HE SAID YES. THEN; W/O A RADIO CALL BEING MADE; HE SWITCHED THE MCP ALT SETTING TO 7000'. I DISCRETELY CALLED APCH AND SAID THAT FLT WAS PASSING 9500' FOR 7000 AND APCH SAID 'MAINTAIN 8000'.' THEY THEN CAME BACK AND SAID 'YOU WERE ONLY CLRED TO 11000'.' THE CAPT PICKED UP THE MIC AND SAID WE WERE CLRED FOR THE PROFILE DSCNT. THE CAPT LATER TOLD ME THAT WHILE I WAS OFF THE RADIO; WE WERE CLRED FOR THE PROFILE DSCNT TO RWY 24 AND THAT HE WAS LOOKING AT THE PROFILE DSCNT FOR RWY 6. THUS; HE PUT 8000' IN INSTEAD OF 11000'. I FEEL THIS COULD HAVE BEEN PREVENTED IF THE CANADIANS WOULD STOP GIVING BOTH A STAR ARR AND A PROFILE DSCNT CLRNC AT THE SAME TIME BECAUSE THEY ARE ON 2 DIFFERENT CHARTS. SUPPLEMENTAL INFO FROM ACN 91564: DURING ARR TO YYZ; I USED; BY MISTAKE; THE PROFILE DSCNT FOR RWY 06 INSTEAD OF RWY 24. I WAS FLYING AND ACCEPTED THE CLRNC FOR THE PROFILE DSCNT RWY 24; BUT USED THE PLATE FOR RWY 06. BY THE TIME THE F/O WAS BACK IN THE LOOP; HE CONTACTED THE SECOND CTLR AND RPTED OUT OF 9000 FOR 7000'. THE CTLR DIRECTED US TO MAINTAIN 8000'. APPROX 15 SECS LATER THE CTLR ASKED IF WE WERE TOLD TO MAINTAIN 11000'. WE REPLIED NO; THAT WE WERE CLRED FOR A PROFILE DSCNT FOR RWY 24; I AM STILL BELIEVING THAT IS THE DSCNT PAGE THAT I AM USING. WE WERE THEN GIVEN A HDG OF 090 DEGS AND 8000'. IT WAS AT THIS TIME THAT I REALIZED THAT I WAS USING THE WRONG PROFILE DSCNT.