B737 Undifferentiated or Other Model
Flight Crew Last 90 Days 241; Flight Crew Type 1000
Confusion; Situational Awareness
Deviation - Track / Heading All Types; Deviation / Discrepancy - Procedural Clearance; Inflight Event / Encounter CFTT / CFIT
General None Reported / Taken
Airspace Structure; Human Factors; Procedure
After being rerouted into an extremely late night and long duty day we were on descent into LAS. After preparing for and briefing for a visual approach backed up by the ILS for [Runway] 25L Approach; Control offered us a right base to [Runway] 19L. We accepted this change leaving little time for a briefing and no good approaches to choose from. Our instructions were to join final at 3;500 FT. To accommodate this altitude request; I turned further away from the airport to join final at about six miles. We flew over the buildings of the strip (the Stratosphere) and left the perch. Tower issued us a low altitude alert. We were high on the PAPI so I'm not sure if the call was legit; but figured a report would be helpful. My suggestion is to not accept last minute changes unless extremely familiar with new procedure.
A B737 Crew on approach to Runway 25L accepted a last minute change for a Runway 19L night visual. When starting a descent after the Stratosphere; ATC called a low altitude alert although they were high on the PAPI.