MD80 crew had TCASII RA in atl class B.

Attributes
ACN	488110
Time
Date	200010
Day	Mon
Local Time Of Day	1201 To 1800
Place
Locale Reference	navaid : atl.vortac
State Reference	GA
Altitude	msl single value : 10000
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Controlling Facilities	tracon : atl.tracon
Operator	common carrier : air carrier
Make Model Name	MD-88
Operating Under FAR Part	Part 121
Navigation In Use	other
Flight Phase	climbout : intermediate altitude
Flight Plan	IFR
Aircraft 2
Controlling Facilities	tracon : atl.tracon
Operator	common carrier : air carrier
Make Model Name	MD-88
Operating Under FAR Part	Part 121
Navigation In Use	other
Flight Phase	climbout : intermediate altitude
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : flight engineer pilot : cfi pilot : atp pilot : multi engine
Experience	flight time last 90 days : 180 flight time total : 12000 flight time type : 700
ASRS Report	488110
Person 2
Affiliation	company : air carrier
Function	flight crew : first officer
Qualification	pilot : commercial pilot : instrument pilot : multi engine
Events
Anomaly	conflict : airborne critical non adherence : far non adherence : published procedure non adherence : required legal separation
Independent Detector	aircraft equipment : tcas other flight crewa other flight crewb
Resolutory Action	flight crew : took evasive action other
Miss Distance	horizontal : 2000 vertical : 0
Supplementary
Problem Areas	ATC Human Performance
Primary Problem	ATC Human Performance
Air Traffic Incident	Operational Error

Narrative:

Aircraft #1 departed atl behind aircraft #2. During climb out and level at 10000 ft the controller failed to maintain separation between the 2 aircraft. Both aircraft received TCASII RA's and deviated from assigned altitude of 10000 ft. #1 aircraft climbed and #2 aircraft descended. #1 aircraft did not see #2 aircraft prior to conflict as #2 aircraft was at it's 5 O'clock position. Don't know if #2 aircraft saw #1 aircraft prior to RA's. Both aircraft reported RA's and that they left their assigned altitude to the controller. The controller then corrected the altitude conflict. A close call, that TCASII saved 2 aircraft from swapping paint.

Original NASA ASRS Text

Title: MD80 CREW HAD TCASII RA IN ATL CLASS B.

Narrative: ACFT #1 DEPARTED ATL BEHIND ACFT #2. DURING CLBOUT AND LEVEL AT 10000 FT THE CTLR FAILED TO MAINTAIN SEPARATION BTWN THE 2 ACFT. BOTH ACFT RECEIVED TCASII RA'S AND DEVIATED FROM ASSIGNED ALT OF 10000 FT. #1 ACFT CLBED AND #2 ACFT DSNDED. #1 ACFT DID NOT SEE #2 ACFT PRIOR TO CONFLICT AS #2 ACFT WAS AT IT'S 5 O'CLOCK POS. DON'T KNOW IF #2 ACFT SAW #1 ACFT PRIOR TO RA'S. BOTH ACFT RPTED RA'S AND THAT THEY LEFT THEIR ASSIGNED ALT TO THE CTLR. THE CTLR THEN CORRECTED THE ALT CONFLICT. A CLOSE CALL, THAT TCASII SAVED 2 ACFT FROM SWAPPING PAINT.

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.