Narrative:

An MEL had been placed on one of the seats in the aircraft because of an inoperative seatbelt. However; the flight was full; meaning that throughout the entire flight a passenger had been without the use of a seatbelt. All 3 crew members forgot that the MEL was in effect and the passenger did not say anything the entire flight. I assume the passenger made it appear that the seatbelt was being properly used so as to avoid being taken off the flight.

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Original NASA ASRS Text

Title: FLT DECK AND CABIN CREW ALL FAIL TO REMEMBER A PAX SEAT MEL'ED FOR AN INOP SEATBELT. PAX BOARDED IN SEAT AND FLEW TO DEST.

Narrative: AN MEL HAD BEEN PLACED ON ONE OF THE SEATS IN THE ACFT BECAUSE OF AN INOP SEATBELT. HOWEVER; THE FLT WAS FULL; MEANING THAT THROUGHOUT THE ENTIRE FLT A PAX HAD BEEN WITHOUT THE USE OF A SEATBELT. ALL 3 CREW MEMBERS FORGOT THAT THE MEL WAS IN EFFECT AND THE PAX DID NOT SAY ANYTHING THE ENTIRE FLT. I ASSUME THE PAX MADE IT APPEAR THAT THE SEATBELT WAS BEING PROPERLY USED SO AS TO AVOID BEING TAKEN OFF THE FLT.

Data retrieved from NASA's ASRS site as of January 2009 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.