Narrative:

On our first RNAV visual approach to runway 19L in las vegas after we were fully configured and cleared to land; we were vectored off the approach and told to climb due to an aircraft with a medical emergency. We were vectored for another visual approach to 19L. Configured; stabilized; and cleared to land; at 700 ft AGL; we were told to go around. In the process of cleaning up the aircraft and climbing to the assigned aircraft; we were asked if we had traffic in our ten o'clock position below us. I told my first officer to relay negative. We were given a heading of 170. My first officer asked the tower to repeat the heading; and there was no response. At this time; we saw a low aircraft climbing westbound at our ten o'clock; quite close to us; and immediately turned another ten degrees left (160) to adequately stay clear of the traffic. We received no TCAS tas or ras. We were vectored for an uneventful landing to runway 25R. New procedures for las go-arounds need modifying. I called the las vegas tower and spoke to the supervisor to find out what happened. He stated that recent changes handed down demanded that once an aircraft crossed a certain point on their screen; a go-around was immediately issued for the aircraft landing on runways 19. My concern is this leads to fast moving; converging aircraft in a high workload phase of flight and; in our case; with a nose high attitude and limited visibility of any aircraft below. Some new procedure needs to be expedited to prevent any big problems this might cause in the future.

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Original NASA ASRS Text

Title: Air Carrier on short final to LAS Runway 19L described a conflict event with departure traffic; the reporter alleging new mandatory go around procedures explained by ATC presented a safety concern as experienced in this instance.

Narrative: On our first RNAV visual approach to Runway 19L in Las Vegas after we were fully configured and cleared to land; we were vectored off the approach and told to climb due to an aircraft with a medical emergency. We were vectored for another Visual Approach to 19L. Configured; stabilized; and cleared to land; at 700 FT AGL; we were told to go around. In the process of cleaning up the aircraft and climbing to the assigned aircraft; we were asked if we had traffic in our ten o'clock position below us. I told my First Officer to relay negative. We were given a heading of 170. My First Officer asked the Tower to repeat the heading; and there was no response. At this time; we saw a low aircraft climbing westbound at our ten o'clock; quite close to us; and immediately turned another ten degrees left (160) to adequately stay clear of the traffic. We received no TCAS TAs or RAs. We were vectored for an uneventful landing to Runway 25R. New procedures for LAS go-arounds need modifying. I called the Las Vegas Tower and spoke to the Supervisor to find out what happened. He stated that recent changes handed down demanded that once an aircraft crossed a certain point on their screen; a go-around was immediately issued for the aircraft landing on Runways 19. My concern is this leads to fast moving; converging aircraft in a high workload phase of flight and; in our case; with a nose high attitude and limited visibility of any aircraft below. Some new procedure needs to be expedited to prevent any big problems this might cause in the future.

Data retrieved from NASA's ASRS site as of July 2013 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.