Narrative:

Enroute to den ATC changed our arrival three times. Expecting the ILS to runway 16R ATC issued a last minute clearance for the RNAV rnp Z to 16R. This occurred during the descent and transition from den center to denver approach. We received a 'descend via' clearance from center with an 11;000 ft level off altitude. We checked in with approach control passing through approximately 14;000 ft. This is when we received the approach change. Our focus at this point was to load and brief the approach. Approach issued a speed restriction and an altitude restriction of 13;000 feet. We were in VNAV path still on the arrival approaching the transition fix (cliff) for the approach. Due to task saturation we missed the altitude restriction. Passing 12;500 feet; approach asked what our assigned altitude was and we replied 11;000 feet. The controller stated 13;000 feet was assigned and re-cleared us to descend to 11;000 feet. Den is the worst airport in our system when it comes to late changes to arrivals; approaches and runway assignments. There needs to be better coordination between center; approach and tower.

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Original NASA ASRS Text

Title: B737-700 flight crew reported overshooting an altitude restriction on the RNAV RNP Z arrival to 16R in DEN. Captain reporter stated multiple ATC changes to the arrival clearance contributed to the event; and the F/O expressed desire for airline procedural changes.

Narrative: Enroute to DEN ATC changed our arrival three times. Expecting the ILS to Runway 16R ATC issued a last minute clearance for the RNAV RNP Z to 16R. This occurred during the descent and transition from DEN Center to Denver Approach. We received a 'descend via' clearance from Center with an 11;000 ft level off altitude. We checked in with Approach Control passing through approximately 14;000 ft. This is when we received the approach change. Our focus at this point was to load and brief the approach. Approach issued a speed restriction and an altitude restriction of 13;000 feet. We were in VNAV PATH still on the arrival approaching the transition fix (CLIFF) for the approach. Due to task saturation we missed the altitude restriction. Passing 12;500 feet; Approach asked what our assigned altitude was and we replied 11;000 feet. The controller stated 13;000 feet was assigned and re-cleared us to descend to 11;000 feet. DEN is the worst airport in our system when it comes to late changes to arrivals; approaches and runway assignments. There needs to be better coordination between Center; Approach and Tower.

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.