Commercial Fixed Wing
Flight Crew Air Transport Pilot (ATP); Flight Crew Instrument; Flight Crew Multiengine
Flight Crew Total 6093; Flight Crew Type 4151
Communication Breakdown; Time Pressure
ATC Issue All Types; Conflict Ground Conflict; Critical; Deviation / Discrepancy - Procedural Published Material / Policy
Air Traffic Control Issued New Clearance; Flight Crew Executed Go Around / Missed Approach; Flight Crew Requested ATC Assistance / Clarification
Human Factors; Procedure
We had just been cleared to line up and wait on Runway 34; with an approaching aircraft on 8 mile final which had been cleared to land. Once we were on the runway after about 30 to 45 seconds we started feeling uncomfortable. Upon a short discussion I made two radio calls stating we are ready for departure. With no response the Captain followed up stating 'tower we are still on the runway.' It was then Tower instructed the aircraft on final to go-around. Once they were clear we were cleared for takeoff.
Reporter indicated this as an isolated incident with no other occurrences that they had heard of or experienced at MMSD.
Air carrier First Officer reported being cleared to line up and wait on Runway 34 at MMSD airport with an aircraft on final.  Flight crew questioned ATC about the possible conflict and Tower instructed aircraft on final to go-around.