Narrative:

ATC vectored us over las airport, then left to 180 degree heading, then 270 degrees for base at 8000 ft. We were asked to follow aircraft Y and were cleared for the visual approach to runway 19R. We did not have the runway or the airport in sight but knew the general location. We lost contact with aircraft Y flight due to the las vegas city lights. We continued what appeared to be an appropriate descent path to the airport. We got a GPWS 'terrain' warning at 4000 ft or below and immediately added power and climbed. Soon after our climb initiated, ATC advised us of a low altitude alert and to climb to 5000 ft. Upon reaching 5000 ft, the runway came in sight and we made a normal landing.

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Original NASA ASRS Text

Title: CFTT IN LAS VEGAS TFC PATTERN.

Narrative: ATC VECTORED US OVER LAS ARPT, THEN L TO 180 DEG HDG, THEN 270 DEGS FOR BASE AT 8000 FT. WE WERE ASKED TO FOLLOW ACFT Y AND WERE CLRED FOR THE VISUAL APCH TO RWY 19R. WE DID NOT HAVE THE RWY OR THE ARPT IN SIGHT BUT KNEW THE GENERAL LOCATION. WE LOST CONTACT WITH ACFT Y FLT DUE TO THE LAS VEGAS CITY LIGHTS. WE CONTINUED WHAT APPEARED TO BE AN APPROPRIATE DSCNT PATH TO THE ARPT. WE GOT A GPWS 'TERRAIN' WARNING AT 4000 FT OR BELOW AND IMMEDIATELY ADDED PWR AND CLBED. SOON AFTER OUR CLB INITIATED, ATC ADVISED US OF A LOW ALT ALERT AND TO CLB TO 5000 FT. UPON REACHING 5000 FT, THE RWY CAME IN SIGHT AND WE MADE A NORMAL LNDG.

Data retrieved from NASA's ASRS site as of July 2007 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.