CL60 inbound to atl at 12000 ft experienced TCASII RA with issued traffic 2000 ft below.

Attributes
ACN	605329
Time
Date	200401
Day	Wed
Local Time Of Day	1801 To 2400
Place
Locale Reference	airport : atl.airport
State Reference	GA
Altitude	msl bound lower : 10000 msl bound upper : 12000
Environment
Flight Conditions	VMC
Light	Night
Aircraft 1
Controlling Facilities	tracon : a80.tracon
Operator	common carrier : air carrier
Make Model Name	Challenger CL600
Operating Under FAR Part	Part 121
Navigation In Use	other
Flight Phase	descent : intermediate altitude
Route In Use	arrival star : n/s
Flight Plan	IFR
Aircraft 2
Controlling Facilities	tracon : a80.tracon
Operator	common carrier : air carrier
Make Model Name	Commercial Fixed Wing
Operating Under FAR Part	Part 121
Flight Phase	climbout : intermediate altitude
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : atp
Experience	flight time last 90 days : 210 flight time total : 3800 flight time type : 2400
ASRS Report	605329
Person 2
Affiliation	company : air carrier
Function	flight crew : first officer
Events
Anomaly	altitude deviation : excursion from assigned altitude conflict : airborne less severe
Independent Detector	aircraft equipment : tcas other flight crewa
Resolutory Action	controller : issued advisory flight crew : took evasive action
Miss Distance	vertical : 2000
Supplementary
Problem Areas	Aircraft
Primary Problem	Aircraft
Air Traffic Incident	other

Narrative:

On arrival into atl, we were informed of traffic on departure 2000 ft below us. We had the traffic in sight. We received a TCASII RA. We complied with our poh procedures.

Original NASA ASRS Text

Title: CL60 INBOUND TO ATL AT 12000 FT EXPERIENCED TCASII RA WITH ISSUED TFC 2000 FT BELOW.

Narrative: ON ARR INTO ATL, WE WERE INFORMED OF TFC ON DEP 2000 FT BELOW US. WE HAD THE TFC IN SIGHT. WE RECEIVED A TCASII RA. WE COMPLIED WITH OUR POH PROCS.

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.