B737 crew had TCASII RA in lax class B.

Attributes
ACN	441602
Time
Date	199907
Day	Thu
Local Time Of Day	1201 To 1800
Place
Locale Reference	airport : lax.airport
State Reference	CA
Altitude	msl single value : 2200
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Controlling Facilities	tower : lax.tower
Operator	common carrier : air carrier
Make Model Name	B737-300
Operating Under FAR Part	Part 121
Navigation In Use	ils localizer & glide slope : 25l
Route In Use	approach : visual
Flight Plan	IFR
Aircraft 2
Controlling Facilities	tower : lax.tower
Operator	general aviation : personal
Make Model Name	Any Unknown or Unlisted Aircraft Manufacturer
Operating Under FAR Part	Part 91
Person 1
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : atp
ASRS Report	441602
Person 2
Affiliation	company : air carrier
Function	flight crew : first officer
Qualification	pilot : commercial pilot : multi engine pilot : instrument
Events
Anomaly	conflict : airborne critical non adherence : far non adherence : required legal separation non adherence : published procedure
Independent Detector	aircraft equipment : tcas
Resolutory Action	flight crew : took evasive action
Miss Distance	horizontal : 6000 vertical : 200
Supplementary
Problem Areas	ATC Human Performance
Primary Problem	ATC Human Performance
Air Traffic Incident	Operational Error

Narrative:

TCASII RA on final approach. Location: localizer runway 25L, lax 9 DME, on GS. At approximately 2200 ft MSL on GS for runway 25L at lax we received a TCASII 'traffic, traffic' call, immediately followed by a TCASII 'climb, climb' call. Traffic was observed on the navigation display at 11 O'clock at 1 mi, 300 ft low, then at 200 ft low as we initiated our climb to comply with the TCASII RA. The TCASII RA went silent 2-3 seconds after we initiated the escape climb. The traffic was not acquired visually by the crew, but a passenger in seat xx said he saw a light aircraft pass to our left and slightly low when we added power to climb. We were able to recapture the GS and accomplish an uneventful landing.

Original NASA ASRS Text

Title: B737 CREW HAD TCASII RA IN LAX CLASS B.

Narrative: TCASII RA ON FINAL APCH. LOCATION: LOC RWY 25L, LAX 9 DME, ON GS. AT APPROX 2200 FT MSL ON GS FOR RWY 25L AT LAX WE RECEIVED A TCASII 'TFC, TFC' CALL, IMMEDIATELY FOLLOWED BY A TCASII 'CLB, CLB' CALL. TFC WAS OBSERVED ON THE NAV DISPLAY AT 11 O'CLOCK AT 1 MI, 300 FT LOW, THEN AT 200 FT LOW AS WE INITIATED OUR CLB TO COMPLY WITH THE TCASII RA. THE TCASII RA WENT SILENT 2-3 SECONDS AFTER WE INITIATED THE ESCAPE CLB. THE TFC WAS NOT ACQUIRED VISUALLY BY THE CREW, BUT A PAX IN SEAT XX SAID HE SAW A LIGHT ACFT PASS TO OUR L AND SLIGHTLY LOW WHEN WE ADDED PWR TO CLB. WE WERE ABLE TO RECAPTURE THE GS AND ACCOMPLISH AN UNEVENTFUL 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.