B737-800 crew had a TCASII RA on approach to runway 25L at lax.

Attributes
ACN	570756
Time
Date	200301
Day	Thu
Local Time Of Day	1201 To 1800
Place
Locale Reference	airport : lax.airport
State Reference	CA
Altitude	agl single value : 1500
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Controlling Facilities	tower : lax.tower
Operator	common carrier : air carrier
Make Model Name	B737-800
Operating Under FAR Part	Part 121
Navigation In Use	other
Flight Phase	landing : missed approach
Route In Use	approach : straight in
Flight Plan	IFR
Aircraft 2
Controlling Facilities	tower : lax.tower
Make Model Name	Any Unknown or Unlisted Aircraft Manufacturer
Person 1
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : atp
Experience	flight time last 90 days : 150 flight time total : 12000 flight time type : 3000
ASRS Report	570756
Person 2
Affiliation	company : air carrier
Function	flight crew : first officer
Events
Anomaly	conflict : nmac non adherence : required legal separation
Independent Detector	aircraft equipment : tcas other flight crewa other flight crewb
Resolutory Action	flight crew : executed missed approach flight crew : took evasive action
Consequence	faa : reviewed incident with flight crew
Miss Distance	horizontal : 0 vertical : 200
Supplementary
Problem Areas	ATC Human Performance Airport Airspace Structure Flight Crew Human Performance
Primary Problem	Ambiguous

Narrative:

We were on final approach in landing confign for runway 25L at lax. At approximately 1500 ft AGL, we received a TCASII RA to climb. The conflict aircraft was idented on the TCASII at -300 ft initially, followed by -200 ft shortly thereafter. Evasive action was taken in accordance with the RA guidance. Subsequently, a normal missed approach was accomplished. The TCASII indication of the conflict aircraft disappeared shortly after the climb was initiated. Lax tower reported no aircraft in our vicinity. The subsequent approach and landing was uneventful.

Original NASA ASRS Text

Title: B737-800 CREW HAD A TCASII RA ON APCH TO RWY 25L AT LAX.

Narrative: WE WERE ON FINAL APCH IN LNDG CONFIGN FOR RWY 25L AT LAX. AT APPROX 1500 FT AGL, WE RECEIVED A TCASII RA TO CLB. THE CONFLICT ACFT WAS IDENTED ON THE TCASII AT -300 FT INITIALLY, FOLLOWED BY -200 FT SHORTLY THEREAFTER. EVASIVE ACTION WAS TAKEN IN ACCORDANCE WITH THE RA GUIDANCE. SUBSEQUENTLY, A NORMAL MISSED APCH WAS ACCOMPLISHED. THE TCASII INDICATION OF THE CONFLICT ACFT DISAPPEARED SHORTLY AFTER THE CLB WAS INITIATED. LAX TWR RPTED NO ACFT IN OUR VICINITY. THE SUBSEQUENT APCH AND LNDG WAS UNEVENTFUL.

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.