An air carrier CL65 flight crew descended below a crossing altitude while performing a STAR into yyz...

Attributes
ACN	393030
Time
Date	199801
Day	Sat
Local Time Of Day	1801 To 2400
Place
Locale Reference	atc facility : yqo
State Reference	ON
Altitude	msl bound lower : 12000 msl bound upper : 13000
Environment
Flight Conditions	VMC
Light	Night
Aircraft 1
Controlling Facilities	artcc : czyz tower : syr
Operator	common carrier : air carrier
Make Model Name	Challenger CL604
Operating Under FAR Part	Part 121
Navigation In Use	Other Other
Flight Phase	descent other
Route In Use	arrival other arrival star : star
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : first officer
Qualification	pilot : cfi pilot : flight engineer pilot : atp
Experience	flight time last 90 days : 220 flight time total : 3900 flight time type : 900
ASRS Report	393030
Person 2
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : atp
Events
Anomaly	altitude deviation : crossing restriction not met non adherence : far non adherence : published procedure
Independent Detector	other flight crewa
Resolutory Action	none taken : detected after the fact
Consequence	Other
Supplementary
Primary Problem	Flight Crew Human Performance
Air Traffic Incident	Pilot Deviation

Narrative:

Upon profile descent to runway 24 at toronto, STAR requires crossing waterloo VOR at between 13000-17000 ft, with a crossing 9 mi later at 11000 ft. Altitude preselector was set for the final altitude of 11000 ft. The aircraft did not leveloff at 13000 ft to cross waterloo, but continued to descend to 11000 ft. The PNF (myself) discovered the deviation, advised the PF and leveled off at current altitude (12000 ft) and continued with the profile.

Original NASA ASRS Text

Title: AN ACR CL65 FLC DSNDED BELOW A XING ALT WHILE PERFORMING A STAR INTO YYZ.

Narrative: UPON PROFILE DSCNT TO RWY 24 AT TORONTO, STAR REQUIRES XING WATERLOO VOR AT BTWN 13000-17000 FT, WITH A XING 9 MI LATER AT 11000 FT. ALT PRESELECTOR WAS SET FOR THE FINAL ALT OF 11000 FT. THE ACFT DID NOT LEVELOFF AT 13000 FT TO CROSS WATERLOO, BUT CONTINUED TO DSND TO 11000 FT. THE PNF (MYSELF) DISCOVERED THE DEV, ADVISED THE PF AND LEVELED OFF AT CURRENT ALT (12000 FT) AND CONTINUED WITH THE PROFILE.

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.