B757 Undifferentiated or Other Model
Flight Crew Air Transport Pilot (ATP); Flight Crew Instrument; Flight Crew Multiengine
Flight Crew Last 90 Days 120; Flight Crew Total 14079; Flight Crew Type 9712
Time Pressure
ATC Issue All Types
Air Traffic Control Issued New Clearance
Human Factors; Procedure
During the arrival to DEN on the ANCHR 4 RNAV we were told by ATC to expect ILS 35R. After many vectors and altitude changes taking us off the published arrival; we were then given direct to DOGGG waypoint. Less than a minute before arriving over DOGGG we were cleared the RNAV (RNP) Z RWY 35R approach. Soon after passing DOGGG I advised the Approach Controller that we were not ready for the approach but that we had the airport in sight. We were then given vectors and altitude assignments and then cleared for the visual approach to RWY 35R. There was never a conflict with other traffic and the visual approach and landing was uneventful but I felt that we were assigned the approach without adequate time to enter and execute the approach. A contributing factor was that the ATIS did not specify which of the two RNAV approaches were being used. So we had a possibility of being assigned any of the three approaches to RWY 35R with a late clearance.
B757 Captain reported refusing a last-minute clearance for the RNAV (RNP) Z RWY 35R at DEN; stating ATC allowed insufficient time to prepare for the procedure.