Aircraft was climbed to an altitude occupied by another aircraft, resulting in less than standard se...

Attributes
ACN	130225
Time
Date	198912
Day	Wed
Local Time Of Day	0601 To 1200
Place
Locale Reference	atc facility : ood
State Reference	NJ
Altitude	msl bound lower : 22000 msl bound upper : 23000
Environment
Light	Daylight
Aircraft 1
Controlling Facilities	artcc : zdc
Make Model Name	Any Unknown or Unlisted Aircraft Manufacturer
Flight Phase	climbout : intermediate altitude
Flight Plan	IFR
Aircraft 2
Make Model Name	Any Unknown or Unlisted Aircraft Manufacturer
Flight Phase	cruise other
Flight Plan	IFR
Person 1
Affiliation	government : faa
Function	controller : radar
Qualification	controller : radar
Experience	controller non radar : 2 controller radar : 18 controller supervisory : 10
ASRS Report	130225
Person 2
Affiliation	government : faa
Function	controller : radar
Qualification	controller : developmental
Events
Anomaly	conflict : airborne less severe non adherence : clearance non adherence : required legal separation
Independent Detector	atc equipment other atc equipment : unspecified other controllera
Resolutory Action	none taken : anomaly accepted
Consequence	Other
Miss Distance	horizontal : 12000 vertical : 500
Supplementary
Primary Problem	ATC Human Performance
Air Traffic Incident	Intra Facility Coordination Failure Operational Error

Narrative:

Aircraft was handed off to next sector and next sector controller requested an aircraft behind the one involved be stopped at a specific altitude, and all others at FL220. Since aircraft was in front of the aircraft specified, I believed that it was ok to continue the front aircraft's climb to FL230 and did in fact stop the trailing aircraft at FL220. I discovered after the fact that the front aircraft was to be stopped at FL220 also. While all this was going on, had to hold 2 aircraft destined to lga because of heavy traffic in another sector that also affected my traffic flows to the northeast. I was conducting OJT at the time. Developmental also believed the lead aircraft was ok going to FL230, and all others had to stop at FL220.

Original NASA ASRS Text

Title: ACFT WAS CLIMBED TO AN ALT OCCUPIED BY ANOTHER ACFT, RESULTING IN LESS THAN STANDARD SEPARATION.

Narrative: ACFT WAS HANDED OFF TO NEXT SECTOR AND NEXT SECTOR CTLR REQUESTED AN ACFT BEHIND THE ONE INVOLVED BE STOPPED AT A SPECIFIC ALT, AND ALL OTHERS AT FL220. SINCE ACFT WAS IN FRONT OF THE ACFT SPECIFIED, I BELIEVED THAT IT WAS OK TO CONTINUE THE FRONT ACFT'S CLB TO FL230 AND DID IN FACT STOP THE TRAILING ACFT AT FL220. I DISCOVERED AFTER THE FACT THAT THE FRONT ACFT WAS TO BE STOPPED AT FL220 ALSO. WHILE ALL THIS WAS GOING ON, HAD TO HOLD 2 ACFT DESTINED TO LGA BECAUSE OF HEAVY TFC IN ANOTHER SECTOR THAT ALSO AFFECTED MY TFC FLOWS TO THE NE. I WAS CONDUCTING OJT AT THE TIME. DEVELOPMENTAL ALSO BELIEVED THE LEAD ACFT WAS OK GOING TO FL230, AND ALL OTHERS HAD TO STOP AT FL220.

Data retrieved from NASA's ASRS site as of August 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.

Aircraft was climbed to an altitude occupied by another aircraft, resulting in less than standard separation.