Large transport air carrier aircraft had a TCASII RA with a small GA aircraft.

Attributes
ACN	422909
Time
Date	199812
Day	Fri
Local Time Of Day	0601 To 1200
Place
Locale Reference	airport : atl
State Reference	GA
Altitude	msl bound lower : 9000 msl bound upper : 9400
Environment
Flight Conditions	VMC
Light	Dawn
Aircraft 1
Operator	common carrier : air carrier
Make Model Name	Commercial Fixed Wing
Flight Phase	cruise other other
Flight Plan	IFR
Aircraft 2
Operator	general aviation : personal
Make Model Name	Any Unknown or Unlisted Aircraft Manufacturer
Person 1
Affiliation	company : air carrier
Function	flight crew : second officer
Qualification	pilot : instrument pilot : flight engineer pilot : commercial pilot : cfi
Experience	flight time last 90 days : 210 flight time total : 5500 flight time type : 600
ASRS Report	422909
Person 2
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Events
Anomaly	conflict : airborne less severe
Independent Detector	aircraft equipment other aircraft equipment : unspecified other flight crewa
Resolutory Action	flight crew : took evasive action other
Consequence	Other
Miss Distance	horizontal : 2000 vertical : 500
Supplementary
Air Traffic Incident	other

Narrative:

We were told to enter holding by ZTL over robinsville VOR as published at 9000 ft. The first officer was at the controls. TCASII was activated. 3 mi from the fix, we got a TCASII RA telling us to climb immediately. A small, 4 seat GA piston- driven airplane was coming at us from ahead and right. We added power and climbed to 9400 ft. We got the airplane in sight about 500 ft below us and 2000 ft to the right. We informed ATC of the conflict and descended from 9400 ft back to our assigned altitude of 9000 ft.

Original NASA ASRS Text

Title: LGT ACR ACFT HAD A TCASII RA WITH A SMALL GA ACFT.

Narrative: WE WERE TOLD TO ENTER HOLDING BY ZTL OVER ROBINSVILLE VOR AS PUBLISHED AT 9000 FT. THE FO WAS AT THE CTLS. TCASII WAS ACTIVATED. 3 MI FROM THE FIX, WE GOT A TCASII RA TELLING US TO CLB IMMEDIATELY. A SMALL, 4 SEAT GA PISTON- DRIVEN AIRPLANE WAS COMING AT US FROM AHEAD AND R. WE ADDED PWR AND CLBED TO 9400 FT. WE GOT THE AIRPLANE IN SIGHT ABOUT 500 FT BELOW US AND 2000 FT TO THE R. WE INFORMED ATC OF THE CONFLICT AND DSNDED FROM 9400 FT BACK TO OUR ASSIGNED ALT OF 9000 FT.

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.