Narrative:

While taxiing to runway 34R in seattle we came very close to being taxied into by a dash 8. We were just past intersection north on taxiway B when I saw the [other] aircraft start to taxi toward us from taxiway west. We didn't hear the ground controller give instructions for the [other] aircraft to follow us or for us to follow them to the runway. My first officer was going through his briefing as he was to be the pilot flying; while I [was] following along while taxiing. I happen to catch the dash out of the corner of my eye to our left. They were moving from their position on taxiway west and I figured they were just getting moving in order to slip in behind us on taxiway B and would follow us. Then I realized they were not aware of us as they were moving toward us now at rapid closure at an angle that I figured if I were to stop; they would have hit us. It was happening so fast at this point I didn't have a chance to say anything to [the other aircraft] or seattle ground control. All I could think of was to get into a position where the [other] crew would see us; which they fortunately did; and stop. As I mentioned; from the angle and speed they were approaching us I figured if I were to stop; they would have hit us as it appeared the first officer in the [other] plane was not looking to their right and I'm not sure were the captain of the [other] plane was looking. The [other] crew mentioned to the seattle ground controller that it would have been nice to have been given a 'heads-up' regarding us as it was a very close call.I think if the [other] crew had been looking to see where they were going they would have seen us. If I had not assumed they were going to follow us; I would have stopped and found out for sure before continuing to taxi. I don't want to point fingers; but it seemed apparent the [other] crew was not looking to their right as they approached the active taxiway. I'm not sure if seattle ground told them to follow us or what. We don't recall hearing either way.

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Original NASA ASRS Text

Title: B737-900 flight crew reported a near-collision with a Dash 8 while taxiing.

Narrative: While taxiing to Runway 34R in Seattle we came very close to being taxied into by a Dash 8. We were just past intersection N on Taxiway B when I saw the [other] aircraft start to taxi toward us from Taxiway W. We didn't hear the Ground Controller give instructions for the [other] aircraft to follow us or for us to follow them to the runway. My FO was going through his briefing as he was to be the pilot flying; while I [was] following along while taxiing. I happen to catch the Dash out of the corner of my eye to our left. They were moving from their position on Taxiway W and I figured they were just getting moving in order to slip in behind us on Taxiway B and would follow us. Then I realized they were not aware of us as they were moving toward us now at rapid closure at an angle that I figured if I were to stop; they would have hit us. It was happening so fast at this point I didn't have a chance to say anything to [the other aircraft] or Seattle Ground Control. All I could think of was to get into a position where the [other] crew would see us; which they fortunately did; and stop. As I mentioned; from the angle and speed they were approaching us I figured if I were to stop; they would have hit us as it appeared the FO in the [other] plane was not looking to their right and I'm not sure were the Captain of the [other] plane was looking. The [other] crew mentioned to the Seattle Ground controller that it would have been nice to have been given a 'heads-up' regarding us as it was a very close call.I think if the [other] crew had been looking to see where they were going they would have seen us. If I had not assumed they were going to follow us; I would have stopped and found out for sure before continuing to taxi. I don't want to point fingers; but it seemed apparent the [other] crew was not looking to their right as they approached the active taxiway. I'm not sure if Seattle Ground told them to follow us or what. We don't recall hearing either way.

Data retrieved from NASA's ASRS site 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.