Narrative:

During my before taxi flow the captain was tapping the generator switches as I was preparing to say standby flaps; I thought I had missed something and queried the captain about it and never got back to the end of the flow. I had a previous captain who would tap switches lights etc. If I had forgotten something; which is why I thought I had forgotten or missed something. In addition; the captain had switched the fmcs around from where I had set them; his on the takeoff page and mine on the legs page. These minor distractions led to us missing the flaps. As we taxied; I thought I had missed something; and around the time I assessed everything the captain did his throttle burst and it was evident what had been forgotten. We stopped the aircraft; set the flaps; reran the before taxi and departure plan checklist for good measure; and departed without incident.I think that modifying the before taxi procedure and or first officer (first officer) flow would greatly mitigate no flap taxi out events. When the captain announces that the ground crew is clear he or she should say flaps 1; before taxi checklist; the first officer could the set the flaps as the first action on the flow then continue the rest of the flow and then read the checklist. This; I believe would greatly reduce the number of no flap taxi out events and also save time as the flaps would be moving into position while accomplishing the other items on the flow. I have flown professionally for 20 years and never once taxied without flaps until here at company. There are too many possible distraction points that could happen during that flow especially with the flaps call at the end. Consider moving either the standing by flaps call to the beginning of the flow; or just removing it and having the captain call out the desired flap setting from the CDU after the ground crew is clear then completing the before taxi flow.

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Original NASA ASRS Text

Title: The flight crew of a Boeing 737 reported that they created a disruption in the checklist because of different styles of verification for each item.

Narrative: During my Before Taxi Flow the captain was tapping the generator switches as I was preparing to say standby flaps; I thought I had missed something and queried the Captain about it and never got back to the end of the flow. I had a previous Captain who would tap switches lights etc. if I had forgotten something; which is why I thought I had forgotten or missed something. In addition; the Captain had switched the FMCS around from where I had set them; his on the Takeoff page and mine on the LEGS page. These minor distractions led to us missing the flaps. As we taxied; I thought I had missed something; and around the time I assessed everything the Captain did his throttle burst and it was evident what had been forgotten. We stopped the aircraft; set the flaps; reran the Before Taxi and Departure Plan Checklist for good measure; and departed without incident.I think that modifying the Before Taxi procedure and or First Officer (FO) Flow would greatly mitigate no flap taxi out events. When the Captain announces that the Ground Crew is clear he or she should say flaps 1; Before Taxi Checklist; the FO could the set the flaps as the first action on the flow then continue the rest of the flow and then read the checklist. This; I believe would greatly reduce the number of no flap taxi out events and also save time as the flaps would be moving into position while accomplishing the other items on the flow. I have flown professionally for 20 years and never once taxied without flaps until here at Company. There are too many possible distraction points that could happen during that flow especially with the flaps call at the end. Consider moving either the Standing by flaps call to the beginning of the flow; or just removing it and having the Captain call out the desired flap setting from the CDU after the Ground Crew is clear then completing the Before Taxi Flow.

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.