Narrative:

Descending into dfw; early in the descent; we were re-cleared from the seevr arrival that was our filed route to the brdje arrival. The seevr arrival had been briefed along with the ILS 35R and we had been cleared to a lower altitude but not given a descent via. Subsequently we were cleared for the brdje arrival; set it up; confirmed the arrival and re-briefed. During that time we were interrupted several times by requests from the flight attendants. We thought all the bases were covered when ATC called and asked us if we were on the seevr or the brdje arrival. We responded brdje. We were passing 16500 ft and he told us to maintain 15000 ft. We then realized that we were in open descent and had just miss a restriction at brdje of 17000 ft. He did not indicate that there was a conflict and we were subsequently re-cleared to descend via the brdje.I believe that when we finished the setup we were in managed flight and can't explain being in open descent other than we missed a reversion during one of the distractions from the flight attendants. Also the similarities between the seevr and the brdje arrivals (many fixes in common but different crossing altitudes i.e.; the crossing at brdje on the seevr is between 12000 ft and 11000 ft and between Fl190 and 17000 ft on the brdje) may have contributed to our perception of the situation due to the fact that we had actually briefed both arrivals by then.

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Original NASA ASRS Text

Title: Descending into DFW on the SEEVR THREE RNAV arrival; the flight crew was instructed to cross the SEEVR waypoint between 13;000 ft to 16;000 ft. The flight was re-cleared on the BRDJE THREE RNAV arrival with a new crossing restraint yet somehow the MCP transitioned to SELECT and the flight crew was unable to level for the constraint in time.

Narrative: Descending into DFW; early in the descent; we were re-cleared from the SEEVR arrival that was our filed route to the BRDJE arrival. The SEEVR arrival had been briefed along with the ILS 35R and we had been cleared to a lower altitude but not given a descent via. Subsequently we were cleared for the BRDJE arrival; set it up; confirmed the arrival and re-briefed. During that time we were interrupted several times by requests from the flight attendants. We thought all the bases were covered when ATC called and asked us if we were on the SEEVR or the BRDJE arrival. We responded BRDJE. We were passing 16500 ft and he told us to maintain 15000 ft. We then realized that we were in open descent and had just miss a restriction at BRDJE of 17000 ft. He did not indicate that there was a conflict and we were subsequently re-cleared to descend via the BRDJE.I believe that when we finished the setup we were in managed flight and can't explain being in open descent other than we missed a reversion during one of the distractions from the flight attendants. Also the similarities between the SEEVR and the BRDJE arrivals (many fixes in common but different crossing altitudes i.e.; the crossing at BRDJE on the SEEVR is between 12000 ft and 11000 ft and between Fl190 and 17000 ft on the BRDJE) may have contributed to our perception of the situation due to the fact that we had actually briefed both arrivals by then.

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.