2 aircraft passed with less than standard separation.

Attributes
ACN	149923
Time
Date	199006
Day	Sun
Local Time Of Day	1201 To 1800
Place
Locale Reference	atc facility : trm
State Reference	CA
Altitude	msl bound lower : 27000 msl bound upper : 27000
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Controlling Facilities	artcc : zla
Operator	common carrier : air carrier
Make Model Name	Medium Large Transport, Low Wing, 2 Turbojet Eng
Navigation In Use	Other
Flight Phase	climbout : intermediate altitude
Route In Use	departure other enroute : on vectors
Flight Plan	IFR
Aircraft 2
Operator	common carrier : air carrier
Make Model Name	Medium Large Transport, Low Wing, 2 Turbojet Eng
Navigation In Use	Other
Flight Phase	cruise other
Flight Plan	IFR
Person 1
Affiliation	government : faa
Function	controller : radar
Qualification	controller : radar
Experience	controller military : 4 controller radar : 2
ASRS Report	149923
Person 2
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : atp
Events
Anomaly	conflict : airborne less severe non adherence : required legal separation non adherence : published procedure
Independent Detector	atc equipment other atc equipment : unspecified
Resolutory Action	controller : issued new clearance
Consequence	faa : investigated
Miss Distance	horizontal : 22800 vertical : 600
Supplementary
Primary Problem	ATC Human Performance
Air Traffic Incident	Operational Error

Narrative:

Medium large transport X given heading 050 degrees at FL250. Medium large transport Y at FL270 eastbound. I gave medium large transport X FL270 when FL260 was intended. Lost vertical sep for 1 update, then latitude sep was achieved.

Original NASA ASRS Text

Title: 2 ACFT PASSED WITH LESS THAN STANDARD SEPARATION.

Narrative: MLG X GIVEN HDG 050 DEGS AT FL250. MLG Y AT FL270 EBND. I GAVE MLG X FL270 WHEN FL260 WAS INTENDED. LOST VERT SEP FOR 1 UPDATE, THEN LAT SEP WAS ACHIEVED.

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.