Air carrier X had less than standard separation from air carrier Y. System error.

Attributes
ACN	189760
Time
Date	199109
Day	Fri
Local Time Of Day	0601 To 1200
Place
Locale Reference	atc facility : lax
State Reference	CA
Altitude	msl bound lower : 9000 msl bound upper : 10000
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Operator	common carrier : air carrier
Make Model Name	Medium Large Transport, Low Wing, 2 Turbojet Eng
Flight Phase	climbout : intermediate altitude
Route In Use	departure sid : sid enroute airway : lax
Flight Plan	IFR
Aircraft 2
Operator	common carrier : air carrier
Make Model Name	Widebody, Low Wing, 3 Turbojet Eng
Flight Phase	cruise other
Route In Use	enroute : direct
Flight Plan	IFR
Person 1
Affiliation	government : faa
Function	controller : departure
Qualification	controller : radar
ASRS Report	189760
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
Independent Detector	other controllera
Resolutory Action	controller : issued new clearance other
Consequence	Other
Miss Distance	horizontal : 12000 vertical : 500
Supplementary
Primary Problem	ATC Human Performance
Air Traffic Incident	Operational Error

Narrative:

I climbed air carrier X to 13000 turning northbound to resume gorman 9 departure off lax. As I was changing air carrier X to burbank approach I saw air carrier Y at 10000. I descended air carrier X to 9000, he was out of 9500 at this time. The aircraft were approximately 2 mi and 500 ft apart. Los angeles has a look and go procedure for gorman 9 departure to climb. The departure controllers must ensure that he is clear of arrs from the north and west of 10000 before he can climb out of 9000. This could be avoided by leaving aircraft at 9000 transferring them to burbank approach and let burbank climb them.

Original NASA ASRS Text

Title: ACR X HAD LTSS FROM ACR Y. SYS ERROR.

Narrative: I CLBED ACR X TO 13000 TURNING NBOUND TO RESUME GORMAN 9 DEP OFF LAX. AS I WAS CHANGING ACR X TO BURBANK APCH I SAW ACR Y AT 10000. I DSNDED ACR X TO 9000, HE WAS OUT OF 9500 AT THIS TIME. THE ACFT WERE APPROX 2 MI AND 500 FT APART. LOS ANGELES HAS A LOOK AND GO PROC FOR GORMAN 9 DEP TO CLB. THE DEP CTLRS MUST ENSURE THAT HE IS CLR OF ARRS FROM THE N AND W OF 10000 BEFORE HE CAN CLB OUT OF 9000. THIS COULD BE AVOIDED BY LEAVING ACFT AT 9000 TRANSFERRING THEM TO BURBANK APCH AND LET BURBANK CLB THEM.

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.