B757 captain reported refusing a last-minute clearance for the RNAV (rnp) Z runway 35R at den; stati...

Attributes
ACN	1565244
Time
Date	201808
Local Time Of Day	0601-1200
Place
Locale Reference	DEN.Airport
State Reference	CO
Environment
Flight Conditions	VMC
Aircraft 1
Make Model Name	B757 Undifferentiated or Other Model
Operating Under FAR Part	Part 121
Flight Phase	Final Approach
Route In Use	STAR ANCHR 4 RNAV
Flight Plan	IFR
Person 1
Function	Captain Pilot Not Flying
Qualification	Flight Crew Air Transport Pilot (ATP) Flight Crew Instrument Flight Crew Multiengine
Experience	Flight Crew Last 90 Days 120 Flight Crew Total 14079 Flight Crew Type 9712
Events
Anomaly	ATC Issue All Types

Narrative:

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 runway 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 runway 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 runway 35R with a late clearance.

Original NASA ASRS Text

Title: 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.

Narrative: 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.

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.

B757 captain reported refusing a last-minute clearance for the RNAV (rnp) Z runway 35R at den; stating ATC allowed insufficient time to prepare for the procedure.