B737 Undifferentiated or Other Model
Flight Crew Air Transport Pilot (ATP); Flight Crew Multiengine; Flight Crew Instrument
Communication Breakdown
ATC Issue All Types; Deviation / Discrepancy - Procedural Published Material / Policy; Inflight Event / Encounter Unstabilized Approach; Inflight Event / Encounter Weather / Turbulence
General None Reported / Taken
Weather; Procedure
Originally assigned the SSKII 1 arrival in DEN with ILS 34R planned. ATC changed arrival to TBARR 1 with ILS 35L. Due to deviations from convective weather. ATC cleared us direct DYMON and maintain 280kts at 11;000'. Due to radio congestion the Pilot Monitoring had a hard time requesting lower and slower. When we finally got to ATC; they cleared us for the visual. We were high and fast so landing gear was extended to assist slowing. I briefed the missed approach again in case we had to go around. At the 1000' gate; we are Vref+20 with flaps 15; gear down and slowing rapidly. By 600' we were stable and properly configured. Touchdown was in the TDZ and we exited at M6 with auto brakes 3. It was clear ATC forgot about our approach clearance but I should have advocated earlier. The bases of the weather prevented a visual sighting of the runways earlier which would have helped make the decision to slow earlier more obvious.After we were at the gate the First Officer and I reviewed the stabilized approach criteria and the CRM/TEM (Threat and Error Management) model which made for a very effective debrief.
Captain reported not being stabilized for approach prior to 1000ft. because they had difficulty requesting lower and slower from ATC.