Flight Crew Air Transport Pilot (ATP)
Situational Awareness
Deviation / Discrepancy - Procedural Clearance; Ground Incursion Runway
Flight Crew Became Reoriented; Flight Crew Took Evasive Action; Flight Crew Returned To Clearance
Human Factors
The event in question transpired while taxiing out for departure at DTW. I was taxiing the aircraft east on runway 9L. Our instructions were taxi 9L M for a 21R take off. I was taxing the aircraft on 9L when I looked and was wondering why there was an Airbus taxiing down on M. That is when I quickly realized that I had taxied past M and was now approaching runway 21R and that Airbus was actually aborting its takeoff. I quickly stopped the aircraft and made a hard left turn towards M. We were told by ATC to call when we got to destination which I did. I mistakenly taxied the aircraft past the intersection I was supposed to turn left on. I mistakenly was looking at 21R thinking it was M. Which for that part of the airport they do parallel each other. I have operated numerous times out of DTW with those exact instructions and have never taxied past M. I will now verbalize each intersection as I pass them and cross compare to the 10-9 page. Please contact me if you have any further questions or concerns.
We were taxiing out to runway 21r via runway 9L and taxi way M. While using 9L for taxi I was briefing the departure for 21R. I looked up to see that we had passed taxiway M and was about to cross the hold short line for 21R. I verbalized to the captain that we needed to stop. At that point the captain hit the breaks to stop. From my point of view it looked like we stopped the aircraft about 5 feet from the hold short line. From a stopped position we were able to make a hard left turn and join taxi way M. We spoke to the DTW tower when we landed and they said that the ASDE system on the field showed us crossing the hold short line for 21R. In the future I will be more alert to my situational awareness and stay heads up as long as possible. It also might be better for DTW ground control to use taxiway V which parallels runway 9L for aircraft going to 21R instead of using a closed runway as a taxiway.
CRJ200 flight crew reports being cleared to Runway 21R at DTW via Runway 9L and M Taxiway. The Captain taxies past Taxiway M and the next intersection is Runway 21R where an incursion occurs; causing a rejected takeoff.