A320 flight crew has a TCAS RA alert during vectors for landing las.

Attributes
ACN	721960
Time
Date	200612
Local Time Of Day	1801 To 2400
Place
Locale Reference	airport : las.airport
State Reference	NV
Altitude	msl single value : 8000
Environment
Weather Elements	other
Aircraft 1
Controlling Facilities	tracon : l30.tracon
Operator	common carrier : air carrier
Make Model Name	A320
Operating Under FAR Part	Part 121
Flight Phase	descent : approach
Route In Use	arrival : on vectors
Flight Plan	IFR
Aircraft 2
Controlling Facilities	tracon : l30.tracon
Make Model Name	Any Unknown or Unlisted Aircraft Manufacturer
Flight Phase	descent : approach
Person 1
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Experience	flight time last 90 days : 150 flight time total : 15000 flight time type : 4000
ASRS Report	721960
Person 2
Affiliation	company : air carrier
Function	flight crew : first officer
Experience	flight time last 90 days : 90 flight time total : 7000 flight time type : 90
ASRS Report	721961
Events
Anomaly	conflict : airborne critical non adherence : required legal separation
Independent Detector	aircraft equipment : tcas other flight crewa other flight crewb
Resolutory Action	flight crew : took evasive action
Consequence	faa : reviewed incident with flight crew
Miss Distance	vertical : 300
Supplementary
Problem Areas	Flight Crew Human Performance ATC Human Performance
Primary Problem	ATC Human Performance

Narrative:

During our second attempt to land in las runway 1L; we asked the controller about landing conditions on runway 25L; we both agreed it was a better runway; we began vectors for runway 25L. We commenced our downwind with a 070 degree heading at 8000 ft; we were cleared to 6000 ft by approach; when we got an aural 'traffic' almost immediately we got an RA; 'climb; climb now' I started the escape maneuver; and at that time ATC requested an immediate right turn climb to heading 190 degrees and 8000 ft. I continued to climb to 10000 ft before 'clear of conflict' was heard. During our escape maneuver; I looked at TCAS which indicated traffic 300 ft below us. ATC then apologized and cleared us back to 6000 ft; from there approach continued without further incident.

Original NASA ASRS Text

Title: A320 FLT CREW HAS A TCAS RA ALERT DURING VECTORS FOR LNDG LAS.

Narrative: DURING OUR SECOND ATTEMPT TO LAND IN LAS RWY 1L; WE ASKED THE CTLR ABOUT LNDG CONDITIONS ON RWY 25L; WE BOTH AGREED IT WAS A BETTER RWY; WE BEGAN VECTORS FOR RWY 25L. WE COMMENCED OUR DOWNWIND WITH A 070 DEG HDG AT 8000 FT; WE WERE CLRED TO 6000 FT BY APCH; WHEN WE GOT AN AURAL 'TFC' ALMOST IMMEDIATELY WE GOT AN RA; 'CLB; CLB NOW' I STARTED THE ESCAPE MANEUVER; AND AT THAT TIME ATC REQUESTED AN IMMEDIATE R TURN CLB TO HDG 190 DEGS AND 8000 FT. I CONTINUED TO CLB TO 10000 FT BEFORE 'CLR OF CONFLICT' WAS HEARD. DURING OUR ESCAPE MANEUVER; I LOOKED AT TCAS WHICH INDICATED TFC 300 FT BELOW US. ATC THEN APOLOGIZED AND CLRED US BACK TO 6000 FT; FROM THERE APCH CONTINUED WITHOUT FURTHER INCIDENT.

Data retrieved from NASA's ASRS site as of January 2009 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.