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Lear flight crew fails to make a crossing restr as depicted on the arrival for runway 24 at yyz, on. Reporter, PIC PNF, cites confusing lines on chart and non standard format.
| Attributes | |
| ACN | 377910 |
| Time | |
| Date | 199708 |
| Day | Fri |
| Local Time Of Day | 0601 To 1200 |
| Place | |
| Locale Reference | atc facility : yyz |
| State Reference | ON |
| Altitude | msl bound lower : 11000 msl bound upper : 13000 |
| Environment | |
| Flight Conditions | Mixed |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | artcc : czyz |
| Operator | other |
| Make Model Name | Gates Learjet Corp Undifferentiated or Other Model |
| Operating Under FAR Part | Part 135 |
| Flight Phase | descent other |
| Route In Use | arrival other arrival star : star enroute airway : czyz |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | Other |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : atp |
| Experience | flight time last 90 days : 200 flight time total : 2500 flight time type : 2000 |
| ASRS Report | 377910 |
| Person 2 | |
| Affiliation | Other |
| Function | flight crew : first officer |
| Qualification | pilot : commercial pilot : instrument |
| Events | |
| Anomaly | altitude deviation : overshoot altitude deviation : crossing restriction not met non adherence : clearance non adherence : published procedure other anomaly other |
| Independent Detector | other controllera |
| Resolutory Action | other |
| Consequence | Other |
| Supplementary | |
| Primary Problem | Flight Crew Human Performance |
| Air Traffic Incident | Pilot Deviation other |
Narrative:
We were cleared via the profile descent for runway 24 at cyyz. Our last altitude assignment was 13000 ft. When the controller cleared us for the profile descent, I didn't see the restr to cross the VOR (ywt) between 13000 ft and 17000 ft. All I saw was the 11000 ft restr. So I told the copilot, who was flying, to descend to 11000 ft. The 13000 ft to 17000 ft restr is not clear. There are several lines that point in every direction near the VOR and the text that describes the restr. If cyyz must continue to use this profile, I think it should be laid out better. There was a second learjet behind us that also had trouble interpreting this clearance. Over all, I think that cyyz makes itself overly complicated. Even if they have a better way to do something, I think that they should do it the same way as every place else.
Original NASA ASRS Text
Title: LEAR FLC FAILS TO MAKE A XING RESTR AS DEPICTED ON THE ARR FOR RWY 24 AT YYZ, ON. RPTR, PIC PNF, CITES CONFUSING LINES ON CHART AND NON STANDARD FORMAT.
Narrative: WE WERE CLRED VIA THE PROFILE DSCNT FOR RWY 24 AT CYYZ. OUR LAST ALT ASSIGNMENT WAS 13000 FT. WHEN THE CTLR CLRED US FOR THE PROFILE DSCNT, I DIDN'T SEE THE RESTR TO CROSS THE VOR (YWT) BTWN 13000 FT AND 17000 FT. ALL I SAW WAS THE 11000 FT RESTR. SO I TOLD THE COPLT, WHO WAS FLYING, TO DSND TO 11000 FT. THE 13000 FT TO 17000 FT RESTR IS NOT CLR. THERE ARE SEVERAL LINES THAT POINT IN EVERY DIRECTION NEAR THE VOR AND THE TEXT THAT DESCRIBES THE RESTR. IF CYYZ MUST CONTINUE TO USE THIS PROFILE, I THINK IT SHOULD BE LAID OUT BETTER. THERE WAS A SECOND LEARJET BEHIND US THAT ALSO HAD TROUBLE INTERPRETING THIS CLRNC. OVER ALL, I THINK THAT CYYZ MAKES ITSELF OVERLY COMPLICATED. EVEN IF THEY HAVE A BETTER WAY TO DO SOMETHING, I THINK THAT THEY SHOULD DO IT THE SAME WAY AS EVERY PLACE ELSE.
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.