Narrative:

On the VKTRY2 RNAV arrival into dfw; we were kept high; and requested to maintain 310 knots. Then; pretty late; we were cleared to 'descend via the VKTRY2 RNAV arrival'. It was not clear if they wanted us to maintain 310 knots or the speeds on the arrival; and by the time we could ask; we were too high to make the altitude crossing restriction at glokk. We advised ATC that we were not going to make the crossing restriction; although it ended up being close. After glokk; we continued on the profile of the arrival; and made the approach and landing uneventfully.the root cause of not making the crossing restriction; was that we were kept quite high until cleared to descend via; and given confusing speed assignments. A contributing factor was a high workload on the arrival; together with unfamiliarity with this airport; that may have caused a distraction in which we did not realize on time; that we were not descending quickly enough to make this crossing restriction.especially in unfamiliar airports; it is important to study the arrival carefully; and try to identify any crossing restrictions that could be potentially challenging. Additionally; it is important to constantly watch the required rate of descent required for all the points ahead on the arrival; and monitor closely any rates that start looking excessive. If they do; query ATC for the need to descend; or start slowing down if able; to assist in loosing energy; making it easier to descend rapidly.

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Original NASA ASRS Text

Title: CRJ-700 flight crew reported a late descent clearance from ZFW on the VKTRY2 RNAV arrival resulting in a missed crossing restriction at GLOKK.

Narrative: On the VKTRY2 RNAV arrival into DFW; we were kept high; and requested to maintain 310 knots. Then; pretty late; we were cleared to 'Descend Via the VKTRY2 RNAV arrival'. It was not clear if they wanted us to maintain 310 knots or the speeds on the arrival; and by the time we could ask; we were too high to make the altitude crossing restriction at GLOKK. We advised ATC that we were not going to make the crossing restriction; although it ended up being close. After GLOKK; we continued on the profile of the arrival; and made the approach and landing uneventfully.The root cause of not making the crossing restriction; was that we were kept quite high until cleared to descend via; and given confusing speed assignments. A contributing factor was a high workload on the arrival; together with unfamiliarity with this airport; that may have caused a distraction in which we did not realize on time; that we were not descending quickly enough to make this crossing restriction.Especially in unfamiliar airports; it is important to study the arrival carefully; and try to identify any crossing restrictions that could be potentially challenging. Additionally; it is important to constantly watch the required rate of descent required for all the points ahead on the arrival; and monitor closely any rates that start looking excessive. If they do; query ATC for the need to descend; or start slowing down if able; to assist in loosing energy; making it easier to descend rapidly.

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.