ARTCC controller climbed medium large transport X through altitude of medium large transport Y with less than standard separation. Aircraft under separate ATC jurisdiction.

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Attributes
ACN	166071
Time
Date	199012
Day	Sat
Local Time Of Day	0601 To 1200
Place
Locale Reference	atc facility : sjc
State Reference	CA
Altitude	msl bound lower : 16000 msl bound upper : 16500
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	enroute airway : zoa
Flight Plan	IFR
Aircraft 2
Operator	common carrier : air carrier
Make Model Name	Medium Large Transport, Low Wing, 2 Turbojet Eng
Flight Phase	climbout : intermediate altitude cruise other
Flight Plan	IFR
Person 1
Affiliation	government : faa
Function	controller : flight data
Qualification	controller : radar
Experience	controller military : 8 controller radar : 5
ASRS Report	166071
Person 2
Affiliation	government : faa
Function	controller : radar
Qualification	controller : radar
Events
Anomaly	conflict : airborne less severe non adherence : published procedure non adherence : required legal separation
Independent Detector	atc equipment other atc equipment : unspecified
Resolutory Action	other
Consequence	Other
Miss Distance	horizontal : 24000 vertical : 500
Supplementary
Primary Problem	ATC Human Performance
Air Traffic Incident	Intra Facility Coordination Failure Operational Error

Narrative:

I was working D-24 when I observed medium large transport X flash his altitude because we didn't have one at the time. I previously took a point out on medium large transport Y and informed the previous radar controller of it. When I saw altitudes on the aircraft it appeared they were laterally separated. I believe if the automation would have been able to display the altitudes at all times and conflict alert could project the flight plan path along with actual path this occurrence would never have happened.

Original NASA ASRS Text

Title: ARTCC CTLR CLIMBED MLG X THROUGH ALT OF MLG Y WITH LESS THAN STANDARD SEPARATION. ACFT UNDER SEPARATE ATC JURISDICTION.

Narrative: I WAS WORKING D-24 WHEN I OBSERVED MLG X FLASH HIS ALT BECAUSE WE DIDN'T HAVE ONE AT THE TIME. I PREVIOUSLY TOOK A POINT OUT ON MLG Y AND INFORMED THE PREVIOUS RADAR CTLR OF IT. WHEN I SAW ALTS ON THE ACFT IT APPEARED THEY WERE LATERALLY SEPARATED. I BELIEVE IF THE AUTOMATION WOULD HAVE BEEN ABLE TO DISPLAY THE ALTS AT ALL TIMES AND CONFLICT ALERT COULD PROJECT THE FLT PLAN PATH ALONG WITH ACTUAL PATH THIS OCCURRENCE WOULD NEVER HAVE HAPPENED.

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.