Narrative:

We were given descent via runway 23 profile descent to cross guelf at 11000 ft. We entered 11000 ft, but failed to note the prior restr to cross waterloo ywt between 13000 ft and 17000 ft. We were approximately 1000 ft low. We owned up and toronto said no problem. It was the first officer's leg. He failed to notice the restr and so did I, even though I had been there 2 days prior. The corner of my approach plate was turned under. Attention to detail. Supplemental information from acn 471840: should have set 13000 ft and then reset to 11000 ft when over ywt.

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Original NASA ASRS Text

Title: AN S80 FLC FAILS TO MAKE AN ALT XING RESTR OVER THE YWT VOR DURING PROFILE APCH INTO CYYZ, ON.

Narrative: WE WERE GIVEN DSCNT VIA RWY 23 PROFILE DSCNT TO CROSS GUELF AT 11000 FT. WE ENTERED 11000 FT, BUT FAILED TO NOTE THE PRIOR RESTR TO CROSS WATERLOO YWT BTWN 13000 FT AND 17000 FT. WE WERE APPROX 1000 FT LOW. WE OWNED UP AND TORONTO SAID NO PROB. IT WAS THE FO'S LEG. HE FAILED TO NOTICE THE RESTR AND SO DID I, EVEN THOUGH I HAD BEEN THERE 2 DAYS PRIOR. THE CORNER OF MY APCH PLATE WAS TURNED UNDER. ATTN TO DETAIL. SUPPLEMENTAL INFO FROM ACN 471840: SHOULD HAVE SET 13000 FT AND THEN RESET TO 11000 FT WHEN OVER YWT.

Data retrieved from NASA's ASRS site as of July 2007 and automatically converted to unabbreviated mixed upper/lowercase text. This report is for informational purposes with no guarantee of accuracy. See NASA's ASRS site for official report.