Air carrier X TCASII RA had less than standard separation from air carrier Y. Pilot deviation.

Attributes
ACN	295418
Time
Date	199409
Day	Fri
Local Time Of Day	1201 To 1800
Place
Locale Reference	airport : lax
State Reference	CA
Altitude	msl bound lower : 5600 msl bound upper : 7000
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Controlling Facilities	tracon : lax
Operator	common carrier : air carrier
Make Model Name	B727 Undifferentiated or Other Model
Operating Under FAR Part	Part 121
Navigation In Use	Other
Flight Phase	cruise other descent : approach
Route In Use	enroute : on vectors
Flight Plan	IFR
Aircraft 2
Operator	common carrier : air carrier
Make Model Name	Commercial Fixed Wing
Operating Under FAR Part	Part 121
Flight Phase	descent : approach descent other
Route In Use	enroute : direct
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : second officer
Qualification	pilot : commercial pilot : atp pilot : instrument
Experience	flight time last 90 days : 120 flight time total : 5300 flight time type : 400
ASRS Report	295418
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 : clearance non adherence : required legal separation non adherence : published procedure other spatial deviation
Independent Detector	aircraft equipment other aircraft equipment : unspecified
Resolutory Action	flight crew : took evasive action
Consequence	Other
Miss Distance	horizontal : 500 vertical : 500
Supplementary
Primary Problem	Flight Crew Human Performance
Air Traffic Incident	Pilot Deviation

Narrative:

Air carrier X level at 7000 ft, heard us called as traffic to air carrier Y. Y had us in sight. Approach told us the same. TCASII RA activated with symbol 500 ft above, 6 O'clock descending. Captain initiated descent and right turn to 120 degrees. Told first officer to tell socal approach our intentions. Radios were very busy so some delay getting through. Socal approach did not want us to descend. RA symbol got to 200 ft above. Air carrier Y finally said they lost sight of us. As we rolled out of turn after 1400 ft descent, saw air carrier Y in straight descent off our left wing at approximately 500 ft. Further descent/landing as per approach direction and uneventful.

Original NASA ASRS Text

Title: ACR X TCASII RA HAD LTSS FROM ACR Y. PLTDEV.

Narrative: ACR X LEVEL AT 7000 FT, HEARD US CALLED AS TFC TO ACR Y. Y HAD US IN SIGHT. APCH TOLD US THE SAME. TCASII RA ACTIVATED WITH SYMBOL 500 FT ABOVE, 6 O'CLOCK DSNDING. CAPT INITIATED DSCNT AND R TURN TO 120 DEGS. TOLD FO TO TELL SOCAL APCH OUR INTENTIONS. RADIOS WERE VERY BUSY SO SOME DELAY GETTING THROUGH. SOCAL APCH DID NOT WANT US TO DSND. RA SYMBOL GOT TO 200 FT ABOVE. ACR Y FINALLY SAID THEY LOST SIGHT OF US. AS WE ROLLED OUT OF TURN AFTER 1400 FT DSCNT, SAW ACR Y IN STRAIGHT DSCNT OFF OUR L WING AT APPROX 500 FT. FURTHER DSCNT/LNDG AS PER APCH DIRECTION AND 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.