Narrative:

We had an extremely light passenger load. During the boarding process; the forward flight attendant asked me if it was okay if a passenger moved from the aft of the aircraft to the front of the aircraft. I told her it was okay with me if she was comfortable with doing so; but that was the last communication that we had. After takeoff; I had a sudden realization that the passenger may have moved and that the passenger data/distribution from the auto-closeout may differ from our actual passenger distribution; therefore affecting the accuracy of our weight and balance and manifest. I had the first officer call back to the fas; who confirmed that the passenger did in fact move. After landing; the flight attendant told me that she did not realize that we needed the updated passenger locations for our manifest/weight and balance numbers. This event was caused by a lack of communication by both parties. By not closing the communication loop; there was information that was not conveyed correctly and therefore caused a breakdown. The lack of further information from the flight attendant led me to the assumption that the passenger was not moved; whereas in her opinion I had given her the ok to do whatever she needed to do and there was no need to report back with any changes. Additionally; we are so used to flights being full and the auto-close out process being so automated; that moving passengers is a relatively new occurrence that none of us were necessarily expecting; but that we should be aware of and expect to occur more in the future.during unprecedented times such as these where passenger loads are extremely light and the need to distance passengers may be necessary; and where the weight and balance process is now very streamlined and automated; it would be a great reminder for all crewmembers to be aware of the necessity to maintain accurate record of passenger location; and update the data in the mcdu to reflect where passengers are actually seated if it differs from the auto close-out data. Explaining to flight attendants the importance of this communication (having an accurate manifest and subsequently weight and balance data) may help all parties understand the importance of making these changes. I personally plan on briefing the crew during particularly empty flights; that they need to report any passenger seating changes to me prior to departure.

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Original NASA ASRS Text

Title: Air carrier Captain reported that the aircraft departed with passenger distribution data different from the actual distribution due to one passenger changing seats. The Captain noted the aircraft was very lightly loaded and it was important to ensure an accurate record of passenger location; as this could affecting weight and balance data.

Narrative: We had an extremely light passenger load. During the boarding process; the forward FA asked me if it was okay if a passenger moved from the aft of the aircraft to the front of the aircraft. I told her it was okay with me if she was comfortable with doing so; but that was the last communication that we had. After takeoff; I had a sudden realization that the passenger may have moved and that the passenger data/distribution from the auto-closeout may differ from our actual passenger distribution; therefore affecting the accuracy of our weight and balance and manifest. I had the FO call back to the FAs; who confirmed that the passenger did in fact move. After landing; the FA told me that she did not realize that we needed the updated passenger locations for our manifest/weight and balance numbers. This event was caused by a lack of communication by both parties. By not closing the communication loop; there was information that was not conveyed correctly and therefore caused a breakdown. The lack of further information from the FA led me to the assumption that the passenger was not moved; whereas in her opinion I had given her the OK to do whatever she needed to do and there was no need to report back with any changes. Additionally; we are so used to flights being full and the auto-close out process being so automated; that moving passengers is a relatively new occurrence that none of us were necessarily expecting; but that we should be aware of and expect to occur more in the future.During unprecedented times such as these where passenger loads are extremely light and the need to distance passengers may be necessary; and where the weight and balance process is now very streamlined and automated; it would be a great reminder for all crewmembers to be aware of the necessity to maintain accurate record of passenger location; and update the data in the MCDU to reflect where passengers are actually seated if it differs from the auto close-out data. Explaining to flight attendants the importance of this communication (having an accurate manifest and subsequently weight and balance data) may help all parties understand the importance of making these changes. I personally plan on briefing the crew during particularly empty flights; that they need to report any passenger seating changes to me prior to departure.

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.