Controller has less than standard separation with 2 descending aircraft.

Attributes
ACN	257176
Time
Date	199311
Day	Tue
Local Time Of Day	0601 To 1200
Place
Locale Reference	airport : lax
State Reference	CA
Altitude	msl bound lower : 4600 msl bound upper : 5000
Environment
Flight Conditions	Mixed
Light	Daylight
Aircraft 1
Controlling Facilities	tracon : lax
Operator	common carrier : air carrier
Make Model Name	Medium Large Transport, Low Wing, 2 Turbojet Eng
Flight Phase	cruise other
Route In Use	arrival other enroute : on vectors
Flight Plan	IFR
Aircraft 2
Operator	other
Make Model Name	Small Transport, Low Wing, 2 Turboprop Eng
Flight Phase	descent other
Route In Use	arrival other enroute : on vectors
Flight Plan	IFR
Person 1
Affiliation	government : faa
Function	controller : approach
Qualification	controller : radar
ASRS Report	257176
Person 2
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : atp
Events
Anomaly	conflict : airborne less severe non adherence : published procedure non adherence : required legal separation other anomaly other
Independent Detector	aircraft equipment other aircraft equipment : unspecified
Resolutory Action	controller : issued new clearance
Consequence	Other
Miss Distance	horizontal : 0 vertical : 400
Supplementary
Primary Problem	ATC Human Performance
Air Traffic Incident	Operational Error

Narrative:

I was working stadium (AR2) and zuma (AR3) combined. We were staggering our arrs. I was talking to about 7 planes. The 2 in particular were air carrier X on downwind and government Y from darts intersection, descending to 4000 ft. Burbank approach was late in descending the government Y and late to change frequency. I stopped my air carrier X at 5000 ft heading 070 degrees off smo VOR. The government Y came off darts heading 140 degrees descending to 4000 ft. After speaking with the other aircraft on frequency, I heard the air carrier X jet say 'do you know what just passed about 400 ft beneath us?' I looked and I saw government Y about 2 mi southeast of air carrier X position at 4000 ft. I told him it was a beoz for the south complex and was no factor to him. He didn't say anything further. I told my supervisor and he asks did I have separation. I said yes. I gave him the flight strips also. As of nov/wed/93 no one has said anything further. Maybe it's me, but I think there are too many planes in the los angeles air at given times because these scrambles are happening every day more than once a day.

Original NASA ASRS Text

Title: CTLR HAS LTSS WITH 2 DSNDING ACFT.

Narrative: I WAS WORKING STADIUM (AR2) AND ZUMA (AR3) COMBINED. WE WERE STAGGERING OUR ARRS. I WAS TALKING TO ABOUT 7 PLANES. THE 2 IN PARTICULAR WERE ACR X ON DOWNWIND AND GOV Y FROM DARTS INTXN, DSNDING TO 4000 FT. BURBANK APCH WAS LATE IN DSNDING THE GOV Y AND LATE TO CHANGE FREQ. I STOPPED MY ACR X AT 5000 FT HDG 070 DEGS OFF SMO VOR. THE GOV Y CAME OFF DARTS HDG 140 DEGS DSNDING TO 4000 FT. AFTER SPEAKING WITH THE OTHER ACFT ON FREQ, I HEARD THE ACR X JET SAY 'DO YOU KNOW WHAT JUST PASSED ABOUT 400 FT BENEATH US?' I LOOKED AND I SAW GOV Y ABOUT 2 MI SE OF ACR X POS AT 4000 FT. I TOLD HIM IT WAS A BEOZ FOR THE S COMPLEX AND WAS NO FACTOR TO HIM. HE DIDN'T SAY ANYTHING FURTHER. I TOLD MY SUPVR AND HE ASKS DID I HAVE SEPARATION. I SAID YES. I GAVE HIM THE FLT STRIPS ALSO. AS OF NOV/WED/93 NO ONE HAS SAID ANYTHING FURTHER. MAYBE IT'S ME, BUT I THINK THERE ARE TOO MANY PLANES IN THE LOS ANGELES AIR AT GIVEN TIMES BECAUSE THESE SCRAMBLES ARE HAPPENING EVERY DAY MORE THAN ONCE A DAY.

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.