B737 Undifferentiated or Other Model
Flight Crew Air Transport Pilot (ATP)
Flight Crew Total 6335; Flight Crew Type 2932
Workload; Distraction
Deviation / Discrepancy - Procedural Published Material / Policy
General None Reported / Taken
Procedure; Human Factors
After a maintenance issue at the gate and being delayed; we taxied to runway finally. During taxi; ATC advised us of a full reroute clearance. We pulled over and stopped as we worked on that. During that time; we were given a runway change. It was very busy and a high workload for both of us.After takeoff and at cruise; FO (First Officer) turns to me and says; 'I am not sure I had the right takeoff data in the box.' We looked at our paperwork; and that is when we both realized we failed to accomplish the Supplemental Checklist for runway change. We had no performance issues with the takeoff and climb out; but we took off with flaps 5 and possibly used flaps 1 data.
When the new takeoff numbers arrived; I printed them off and accepted the data in the FMC. Shortly after we completed the checklist we were cleared for takeoff. The takeoff itself was uneventful. Upon climbout I noticed that the takeoff data had us taking off at a flaps setting of 1. I notified the Captain and we discussed what happened. Neither of us could confirm that the uploaded flap setting in the FMC was for flaps 1 or flaps 5 (only that the Takeoff Data message called for flaps 1). We definitely took off at Flaps 5.
B737 flight crew reported that they took off with performance data based on a different runway.