Enroute controller described a loss of separation event when responding to an adjacent controllers c...

Narrative:

A B737 was level at FL330 and requesting FL350. When the B737 crossed into my boundary; I was able to climb him reference my own traffic. A couple minutes later; sector 49 told me the B737 was good to climb to FL350 and I climbed the B737 to FL350. When I looked back to my screen; the B737 was flashing with an MD88 who was level at FL340. I turned the B737 20 degrees left and attempted to turn the MD88 20 degrees left but did not get a response; so I turned the B737 an additional 20 degrees left and told him to report when he was level at FL350. Then I turned the MD88 30 degrees left. I was a little busy at the time and had a test flight that I was trying to figure out what to altitude to climb to. When the ultra high controller says an aircraft is able to climb to a higher altitude; I should be more diligent in reviewing my own traffic before initiating the climb.

Original NASA ASRS Text

Title: Enroute Controller described a loss of separation event when responding to an adjacent controllers comment reference a climb without first noting possible conflicting traffic within the area.

Narrative: A B737 was level at FL330 and requesting FL350. When the B737 crossed into my boundary; I was able to climb him reference my own traffic. A couple minutes later; Sector 49 told me the B737 was good to climb to FL350 and I climbed the B737 to FL350. When I looked back to my screen; the B737 was flashing with an MD88 who was level at FL340. I turned the B737 20 degrees left and attempted to turn the MD88 20 degrees left but did not get a response; so I turned the B737 an additional 20 degrees left and told him to report when he was level at FL350. Then I turned the MD88 30 degrees left. I was a little busy at the time and had a test flight that I was trying to figure out what to altitude to climb to. When the ultra high controller says an aircraft is able to climb to a higher altitude; I should be more diligent in reviewing my own traffic before initiating the climb.

Data retrieved from NASA's ASRS site as of July 2013 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.

Attributes
ACN	1006238
Time
Date	201204
Local Time Of Day	1201-1800
Place
Locale Reference	ZZZ.ARTCC
State Reference	US
Aircraft 1
Make Model Name	B737-300
Operating Under FAR Part	Part 121
Flight Phase	Climb
Flight Plan	IFR
Aircraft 2
Make Model Name	MD-88
Operating Under FAR Part	Part 121
Flight Phase	Cruise
Flight Plan	IFR
Person 1
Function	Enroute
Qualification	Air Traffic Control Fully Certified
Events
Anomaly	ATC Issue All Types Conflict Airborne Conflict

Enroute controller described a loss of separation event when responding to an adjacent controllers comment reference a climb without first noting possible conflicting traffic within the area.