Air carrier has a TCASII RA on approach to las.

Attributes
ACN	459480
Time
Date	200001
Day	Thu
Local Time Of Day	0601 To 1200
Place
Locale Reference	airport : las.airport
State Reference	NV
Altitude	msl bound lower : 10000 msl bound upper : 10500
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Controlling Facilities	tracon : l30.tracon
Operator	common carrier : air carrier
Make Model Name	B737-300
Operating Under FAR Part	Part 121
Navigation In Use	ils localizer only : 25l other
Flight Phase	descent : approach
Route In Use	approach : instrument non precision arrival star : nootn.2
Flight Plan	IFR
Aircraft 2
Controlling Facilities	tracon : l30.tracon
Operator	general aviation : personal
Make Model Name	Skylane 182/RG Turbo Skylane/RG
Operating Under FAR Part	Part 91
Flight Phase	cruise : level
Flight Plan	None
Person 1
Affiliation	company : air carrier
Function	flight crew : first officer
Qualification	pilot : atp
Experience	flight time last 90 days : 210 flight time total : 6500 flight time type : 3000
ASRS Report	459480
Person 2
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : atp
Events
Anomaly	altitude deviation : excursion from assigned altitude conflict : nmac non adherence : far
Independent Detector	aircraft equipment : tcas other flight crewa
Resolutory Action	controller : issued advisory flight crew : took evasive action
Miss Distance	horizontal : 2000 vertical : 500
Supplementary
Problem Areas	Flight Crew Human Performance Airspace Structure ATC Human Performance
Primary Problem	Flight Crew Human Performance
Air Traffic Incident	Pilot Deviation

Narrative:

On the nootn 2 arrival to las, level at 10000 ft at 250 KTS, TCASII target appeared at 1 O'clock position, about 1 1/2 mi at 10000 ft. 2-3 seconds later, TCASII issued RA climb commands. After starting climb, we visually acquired target about 3/4 mi away, still at 10000 ft. We leveled at 10500 ft. He took no evasive action. Las approach called the traffic as we started the RA maneuver. Other information: approach was in the process of switching to runway 1R/left arrs. We were #3 and the controller was way too busy during this period. Very little information was communicated to us by approach control about our near miss or the ensuing visual approach to runway 1R. He was maxed out. TCASII saves another load of passenger. Good thing the little guy was squawking!

Original NASA ASRS Text

Title: ACR HAS A TCASII RA ON APCH TO LAS.

Narrative: ON THE NOOTN 2 ARR TO LAS, LEVEL AT 10000 FT AT 250 KTS, TCASII TARGET APPEARED AT 1 O'CLOCK POS, ABOUT 1 1/2 MI AT 10000 FT. 2-3 SECONDS LATER, TCASII ISSUED RA CLB COMMANDS. AFTER STARTING CLB, WE VISUALLY ACQUIRED TARGET ABOUT 3/4 MI AWAY, STILL AT 10000 FT. WE LEVELED AT 10500 FT. HE TOOK NO EVASIVE ACTION. LAS APCH CALLED THE TFC AS WE STARTED THE RA MANEUVER. OTHER INFO: APCH WAS IN THE PROCESS OF SWITCHING TO RWY 1R/L ARRS. WE WERE #3 AND THE CTLR WAS WAY TOO BUSY DURING THIS PERIOD. VERY LITTLE INFO WAS COMMUNICATED TO US BY APCH CTL ABOUT OUR NEAR MISS OR THE ENSUING VISUAL APCH TO RWY 1R. HE WAS MAXED OUT. TCASII SAVES ANOTHER LOAD OF PAX. GOOD THING THE LITTLE GUY WAS SQUAWKING!

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.