Flight crew of an medium large transport air carrier aircraft climbed in response to a TCASII RA and at the same time and ATC gave the other aircraft a vectoring turn away from the reported aircraft.

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Attributes
ACN	261261
Time
Date	199401
Day	Mon
Local Time Of Day	0001 To 0600
Place
Locale Reference	atc facility : 2lx airport : lax
State Reference	CA
Altitude	msl bound lower : 4000 msl bound upper : 4500
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Controlling Facilities	tracon : lax artcc : zma
Operator	common carrier : air carrier
Make Model Name	Any Unknown or Unlisted Aircraft Manufacturer
Operating Under FAR Part	Part 121
Navigation In Use	Other Other
Flight Phase	descent : approach
Flight Plan	IFR
Aircraft 2
Make Model Name	Any Unknown or Unlisted Aircraft Manufacturer
Flight Phase	descent : approach
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : atp
Experience	flight time last 90 days : 200 flight time total : 15000 flight time type : 1800
ASRS Report	261261
Person 2
Affiliation	company : air carrier
Function	flight crew : first officer
Qualification	pilot : instrument pilot : commercial
Events
Anomaly	altitude deviation : excursion from assigned altitude conflict : airborne less severe non adherence : published procedure non adherence : clearance other anomaly other
Independent Detector	aircraft equipment other aircraft equipment : unspecified other controllera other flight crewa
Resolutory Action	flight crew : took evasive action other
Consequence	Other
Miss Distance	horizontal : 9000 vertical : 500
Supplementary
Primary Problem	ATC Human Performance
Air Traffic Incident	other

Narrative:

Arriving lax from the north we were cleared to cross smo at 7000 ft and depart on a 070 degree heading for vectors to runway 24R. Shortly thereafter our runway was changed to runway 25L. We were given several different altitudes and headings and ultimately were cleared to 4000 ft on a 160 degree heading. I, as PNF, read back the altitude and selected 4000 ft on the mode control panel. The first officer, who was flying, repeated '4000 ft' and pointed to the selected altitude. A few moments later the controller, while pointing out our traffic, noticed an altitude conflict with that traffic and said we should be at 5000 ft. I stated that we had been assigned 4000 ft. He vectored the other aircraft and at the same time we started to receive a TCASII warning. We received an RA to climb. We did and informed the controller of our action. We climbed to approximately 500 ft to resolve the RA and then were vectored to final approach on runway 25L.

Original NASA ASRS Text

Title: FLC OF AN MLG ACR ACFT CLBED IN RESPONSE TO A TCASII RA AND AT THE SAME TIME AND ATC GAVE THE OTHER ACFT A VECTORING TURN AWAY FROM THE RPTED ACFT.

Narrative: ARRIVING LAX FROM THE N WE WERE CLRED TO CROSS SMO AT 7000 FT AND DEPART ON A 070 DEG HDG FOR VECTORS TO RWY 24R. SHORTLY THEREAFTER OUR RWY WAS CHANGED TO RWY 25L. WE WERE GIVEN SEVERAL DIFFERENT ALTS AND HDGS AND ULTIMATELY WERE CLRED TO 4000 FT ON A 160 DEG HDG. I, AS PNF, READ BACK THE ALT AND SELECTED 4000 FT ON THE MODE CTL PANEL. THE FO, WHO WAS FLYING, REPEATED '4000 FT' AND POINTED TO THE SELECTED ALT. A FEW MOMENTS LATER THE CTLR, WHILE POINTING OUT OUR TFC, NOTICED AN ALT CONFLICT WITH THAT TFC AND SAID WE SHOULD BE AT 5000 FT. I STATED THAT WE HAD BEEN ASSIGNED 4000 FT. HE VECTORED THE OTHER ACFT AND AT THE SAME TIME WE STARTED TO RECEIVE A TCASII WARNING. WE RECEIVED AN RA TO CLB. WE DID AND INFORMED THE CTLR OF OUR ACTION. WE CLBED TO APPROX 500 FT TO RESOLVE THE RA AND THEN WERE VECTORED TO FINAL APCH ON RWY 25L.

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.