Air carrier on approach receives TCAS ii RA. Descends, then returns to assigned.

Attributes
ACN	172833
Time
Date	199103
Day	Sun
Local Time Of Day	0601 To 1200
Place
Locale Reference	atc facility : lax
State Reference	CA
Altitude	msl bound lower : 9200 msl bound upper : 10000
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Operator	common carrier : air carrier
Make Model Name	Large Transport, Low Wing, 3 Turbojet Eng
Flight Phase	descent : approach
Route In Use	enroute airway : lax
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : atp
Experience	flight time last 90 days : 180 flight time total : 13000 flight time type : 1100
ASRS Report	172833
Person 2
Affiliation	company : air carrier
Function	flight crew : first officer
Qualification	pilot : atp
Events
Anomaly	altitude deviation : excursion from assigned altitude non adherence : far non adherence : clearance other anomaly other
Independent Detector	other flight crewa
Resolutory Action	flight crew : returned to intended course or assigned course
Consequence	Other
Supplementary
Air Traffic Incident	Pilot Deviation

Narrative:

While proceeding inbound on the 24R localizer and maintaining 10000', ATC advised us of traffic 10 O'clock, 9400' proceeding in a nne direction. Shortly afterward we were alerted on TCAS of a TA target followed by an RA corrective alert to descend, crossing descend. We descended approximately 800' before we received a clear of conflict and returned to originally assigned altitude. We never saw the other aircraft.

Original NASA ASRS Text

Title: ACR ON APCH RECEIVES TCAS II RA. DESCENDS, THEN RETURNS TO ASSIGNED.

Narrative: WHILE PROCEEDING INBND ON THE 24R LOC AND MAINTAINING 10000', ATC ADVISED US OF TFC 10 O'CLOCK, 9400' PROCEEDING IN A NNE DIRECTION. SHORTLY AFTERWARD WE WERE ALERTED ON TCAS OF A TA TARGET FOLLOWED BY AN RA CORRECTIVE ALERT TO DSND, XING DSND. WE DSNDED APPROX 800' BEFORE WE RECEIVED A CLR OF CONFLICT AND RETURNED TO ORIGINALLY ASSIGNED ALT. WE NEVER SAW THE OTHER ACFT.

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.