B737-700
Flight Crew Air Transport Pilot (ATP)
Flight Crew Last 90 Days 193
Situational Awareness
Conflict Airborne Conflict; Deviation / Discrepancy - Procedural Published Material / Policy; Deviation / Discrepancy - Procedural Clearance; Ground Incursion Runway
Air Traffic Control Issued New Clearance
Human Factors
While approaching the end of Taxiway Charlie; we were given a 'Runway 25R line up and wait' clearance. We were just starting the turn onto Taxiway Bravo where I checked final and verbalized it as being clear. I did notice a Company aircraft on close-in final for 25L. I had just started to pass over the hold short line when I checked final again out of habit. This is when I noticed the Company aircraft was in a low level turn to our assigned runway. I exclaimed over Tower frequency; 'There's something wrong. This aircraft is on my runway.' We were given hold short instructions. Although we had passed the hold short line; Tower still allowed the aircraft to land. Disaster averted!
Air Carrier issued a 'line up and wait' for Runway 25R at LAS noted traffic on final lining up for the same runway and advised ATC; although across the hold line; ATC allowed the arrival to land.