Atl east and west approach controllers lost separation between opposite direction traffic at 8000 ft...

Attributes
ACN	547580
Time
Date	200205
Day	Sun
Local Time Of Day	0601 To 1200
Place
Locale Reference	airport : atl.airport
State Reference	GA
Altitude	msl single value : 8000
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Operator	general aviation : personal
Make Model Name	Bonanza 33
Operating Under FAR Part	Part 91
Flight Phase	cruise : level
Route In Use	enroute airway : v18.airway
Flight Plan	IFR
Aircraft 2
Operator	common carrier : air carrier
Make Model Name	Regional Jet CL65, Undifferentiated or Other Model
Operating Under FAR Part	Part 121
Flight Phase	climbout : vacating altitude
Route In Use	enroute airway : v18.airway
Flight Plan	IFR
Person 1
Affiliation	government : faa
Function	controller : approach
Qualification	controller : radar
Experience	controller military : 5 controller radar : 15 controller supervisory : 1 controller time certified in position1 : 2 flight time total : 5
ASRS Report	547580
Person 2
Affiliation	government : faa
Function	controller : departure
Events
Anomaly	conflict : airborne critical non adherence : required legal separation non adherence : published procedure
Independent Detector	atc equipment : conflict alert atc equipment other atc equipment : radar other controllera
Resolutory Action	controller : separated traffic controller : issued advisory controller : issued alert flight crew : took evasive action
Miss Distance	horizontal : 6000 vertical : 0
Supplementary
Problem Areas	ATC Human Performance
Primary Problem	ATC Human Performance

Narrative:

I was working aircraft X, a wbound overflt at 8000 ft on V18. I observed an eastbound atlanta departure (aircraft Y, that had not 'tagged up') approach aircraft X, opposite direction. I issued traffic when the departure appeared to level at 7000 ft. When I observed the departure climb above 7000 ft, I issued a traffic alert and turned aircraft X to the right to avoid merging with the opposite direction traffic. Apparently, the departure controller forgot about the overflt at 8000 ft and climbed through that altitude.

Original NASA ASRS Text

Title: ATL E AND W APCH CTLRS LOST SEPARATION BTWN OPPOSITE DIRECTION TFC AT 8000 FT.

Narrative: I WAS WORKING ACFT X, A WBOUND OVERFLT AT 8000 FT ON V18. I OBSERVED AN EBOUND ATLANTA DEP (ACFT Y, THAT HAD NOT 'TAGGED UP') APCH ACFT X, OPPOSITE DIRECTION. I ISSUED TFC WHEN THE DEP APPEARED TO LEVEL AT 7000 FT. WHEN I OBSERVED THE DEP CLB ABOVE 7000 FT, I ISSUED A TFC ALERT AND TURNED ACFT X TO THE R TO AVOID MERGING WITH THE OPPOSITE DIRECTION TFC. APPARENTLY, THE DEP CTLR FORGOT ABOUT THE OVERFLT AT 8000 FT AND CLBED THROUGH THAT ALT.

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.