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Flight crew of A320 depart cyyz runway 23 at taxiway Q rather than taxiway H as cleared. Cite confusion over display of intxns on the commercial airport page.
| Attributes | |
| ACN | 685013 |
| Time | |
| Date | 200601 |
| Local Time Of Day | 1801 To 2400 |
| Place | |
| Locale Reference | airport : cyyz.airport |
| State Reference | ON |
| Altitude | agl single value : 0 |
| Environment | |
| Flight Conditions | Marginal |
| Aircraft 1 | |
| Operator | common carrier : air carrier |
| Make Model Name | A320 |
| Operating Under FAR Part | Part 121 |
| Flight Phase | ground : takeoff roll |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : first officer |
| Experience | flight time last 90 days : 200 flight time total : 6500 flight time type : 4000 |
| ASRS Report | 685013 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Experience | flight time last 90 days : 200 flight time total : 22000 flight time type : 3000 |
| ASRS Report | 685022 |
| Events | |
| Anomaly | incursion : taxiway non adherence : clearance non adherence : published procedure |
| Independent Detector | other flight crewa other flight crewb |
| Resolutory Action | none taken : detected after the fact |
| Supplementary | |
| Problem Areas | Flight Crew Human Performance Chart Or Publication |
| Primary Problem | Chart Or Publication |
| Situations | |
| Chart | airport : cyyz.airport |
Narrative:
After taxiing from gate at cyyz; received clearance to runway 23 via taxiway a-h. Checklist was completed and expanded commercial airport page was referenced for taxi direction. Tower cleared us for takeoff. Crew misidented txwys H and Q at the end of the runway; resulting in taking the wrong route to the runway. Problem source would appear to be that; on expanded commercial airport page; the letters identing the difference between taxiway Q and H are poorly located; leading to ambiguity. Supplemental information from acn 685022: while the commercial airport page is fairly clear in distinguishing taxiway Q and taxiway H; expanded commercial airport page is less clear and; in fact; can be confusing because of where the letter idents are placed and should be changed to match. Crew mistakes might be avoided in the future.
Original NASA ASRS Text
Title: FLT CREW OF A320 DEPART CYYZ RWY 23 AT TXWY Q RATHER THAN TXWY H AS CLRED. CITE CONFUSION OVER DISPLAY OF INTXNS ON THE COMMERCIAL ARPT PAGE.
Narrative: AFTER TAXIING FROM GATE AT CYYZ; RECEIVED CLRNC TO RWY 23 VIA TXWY A-H. CHKLIST WAS COMPLETED AND EXPANDED COMMERCIAL ARPT PAGE WAS REFED FOR TAXI DIRECTION. TWR CLRED US FOR TKOF. CREW MISIDENTED TXWYS H AND Q AT THE END OF THE RWY; RESULTING IN TAKING THE WRONG RTE TO THE RWY. PROB SOURCE WOULD APPEAR TO BE THAT; ON EXPANDED COMMERCIAL ARPT PAGE; THE LETTERS IDENTING THE DIFFERENCE BTWN TXWY Q AND H ARE POORLY LOCATED; LEADING TO AMBIGUITY. SUPPLEMENTAL INFO FROM ACN 685022: WHILE THE COMMERCIAL ARPT PAGE IS FAIRLY CLR IN DISTINGUISHING TXWY Q AND TXWY H; EXPANDED COMMERCIAL ARPT PAGE IS LESS CLR AND; IN FACT; CAN BE CONFUSING BECAUSE OF WHERE THE LETTER IDENTS ARE PLACED AND SHOULD BE CHANGED TO MATCH. CREW MISTAKES MIGHT BE AVOIDED IN THE FUTURE.
Data retrieved from NASA's ASRS site as of January 2009 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.