Sct radar controller experienced near midair collision/operational error.

Attributes
ACN	581997
Time
Date	200305
Day	Fri
Local Time Of Day	0001 To 0600
Place
Locale Reference	airport : lax.airport
State Reference	CA
Altitude	msl single value : 800
Environment
Flight Conditions	VMC
Light	Night
Aircraft 1
Controlling Facilities	tracon : sct.tracon tower : lax.tower
Operator	common carrier : air carrier
Operating Under FAR Part	Part 121
Navigation In Use	ils localizer & glide slope : 7l
Flight Phase	descent : approach landing : go around
Route In Use	approach : instrument precision
Flight Plan	IFR
Aircraft 2
Controlling Facilities	tracon : sct.tracon tower : lax.tower
Operator	common carrier : air carrier
Make Model Name	DC-10 Undifferentiated or Other Model
Operating Under FAR Part	Part 121
Flight Phase	climbout : takeoff climbout : initial
Flight Plan	IFR
Person 1
Affiliation	government : faa
Function	controller : approach
Qualification	controller : radar
Experience	controller limited radar : 3 controller radar : 17
ASRS Report	581997
Person 2
Affiliation	government : faa
Function	controller : local
Events
Anomaly	conflict : nmac conflict : airborne critical non adherence : required legal separation
Independent Detector	other controllera
Resolutory Action	controller : issued new clearance flight crew : took evasive action flight crew : executed go around
Consequence	faa : investigated
Miss Distance	horizontal : 200 vertical : 100
Supplementary
Problem Areas	Flight Crew Human Performance Airport ATC Human Performance
Primary Problem	ATC Human Performance
Air Traffic Incident	Operational Error

Narrative:

Air carrier X B764, was on an ILS approach to runway 7L and at approximately 800 ft over the shoreline, an air carrier Y departure off runway 25L appeared to get airborne opposite direction. The targets merged or were very close to merging with approximately 100 ft altitude difference. The lax tower local controller had initiated a turn to air carrier X to 10 degree heading at approximately this time. Air carrier X made a go around.

Original NASA ASRS Text

Title: SCT RADAR CTLR EXPERIENCED NMAC/OPERROR.

Narrative: ACR X B764, WAS ON AN ILS APCH TO RWY 7L AND AT APPROX 800 FT OVER THE SHORELINE, AN ACR Y DEP OFF RWY 25L APPEARED TO GET AIRBORNE OPPOSITE DIRECTION. THE TARGETS MERGED OR WERE VERY CLOSE TO MERGING WITH APPROX 100 FT ALT DIFFERENCE. THE LAX TWR LOCAL CTLR HAD INITIATED A TURN TO ACR X TO 10 DEG HDG AT APPROX THIS TIME. ACR X MADE A GAR.

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.