B737 had TCASII RA in ZTL class a airspace.

Attributes
ACN	464955
Time
Date	200003
Day	Fri
Local Time Of Day	1201 To 1800
Place
State Reference	SC
Altitude	msl bound lower : 23200 msl bound upper : 24000
Environment
Flight Conditions	IMC
Light	Daylight
Aircraft 1
Controlling Facilities	artcc : ztl.artcc
Operator	common carrier : air carrier
Make Model Name	B737 Undifferentiated or Other Model
Operating Under FAR Part	Part 121
Flight Phase	cruise : level
Flight Plan	IFR
Aircraft 2
Controlling Facilities	artcc : ztl.artcc
Make Model Name	Any Unknown or Unlisted Aircraft Manufacturer
Flight Phase	cruise : enroute altitude change
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : cfi pilot : flight engineer pilot : atp
Experience	flight time last 90 days : 200 flight time total : 10000 flight time type : 900
ASRS Report	464955
Person 2
Affiliation	company : air carrier
Function	flight crew : first officer
Qualification	pilot : multi engine pilot : instrument pilot : commercial
Events
Anomaly	conflict : airborne critical non adherence : published procedure non adherence : required legal separation other anomaly other
Independent Detector	aircraft equipment : tcas other flight crewa other flight crewb
Resolutory Action	flight crew : took evasive action
Supplementary
Problem Areas	ATC Human Performance
Primary Problem	ATC Human Performance
Air Traffic Incident	Operational Error

Narrative:

At cruise (FL240) received 'red' descend RA. Center would not respond quickly to my query about traffic. We descended to FL232. With 'clear of conflict' we climbed back to FL240. We noticed traffic just behind us at +300 ft, descending.

Original NASA ASRS Text

Title: B737 HAD TCASII RA IN ZTL CLASS A AIRSPACE.

Narrative: AT CRUISE (FL240) RECEIVED 'RED' DSND RA. CTR WOULD NOT RESPOND QUICKLY TO MY QUERY ABOUT TFC. WE DSNDED TO FL232. WITH 'CLR OF CONFLICT' WE CLBED BACK TO FL240. WE NOTICED TFC JUST BEHIND US AT +300 FT, DSNDING.

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.