B727 and B737 had TCASII RA in ZTL class a.

Attributes
ACN	489961
Time
Date	200010
Day	Wed
Local Time Of Day	1201 To 1800
Place
Locale Reference	navaid : spa.vortac
State Reference	SC
Altitude	msl bound lower : 28300 msl bound upper : 29000
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Controlling Facilities	artcc : ztl.artcc
Operator	common carrier : air carrier
Make Model Name	B727-200
Operating Under FAR Part	Part 121
Navigation In Use	other vortac
Flight Phase	climbout : vacating altitude
Route In Use	departure other
Flight Plan	IFR
Aircraft 2
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
Person 1
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : instrument pilot : commercial pilot : atp
Experience	flight time last 90 days : 180 flight time total : 14680 flight time type : 7535
ASRS Report	489961
Person 2
Affiliation	company : air carrier
Function	flight crew : first officer
Qualification	pilot : atp
Experience	flight time last 90 days : 200 flight time total : 5500 flight time type : 2000
ASRS Report	490720
Events
Anomaly	conflict : airborne critical 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 other
Miss Distance	horizontal : 18000 vertical : 500
Supplementary
Problem Areas	ATC Human Performance
Primary Problem	ATC Human Performance
Air Traffic Incident	Operational Error

Narrative:

Departure and climb out uneventful. While cleared direct spa and climbing to FL290, we experienced a TA immediately followed by an RA passing FL283. We immediately stopped the climb to comply with the RA (descend) and was also told to descend to FL280 by ATC (ZTL), and told to turn to 090 degree heading. We were on a 040 degree heading direct spa at the time of the RA. We complied with the instructions, reset the altitude alerter to reflect our new altitude (280 degrees) and watched an air carrier B737 pass off our left side at FL290, at about 3-4 NM. He too experienced an RA. Several mins later, we were released to FL290 and on course direct spa.

Original NASA ASRS Text

Title: B727 AND B737 HAD TCASII RA IN ZTL CLASS A.

Narrative: DEP AND CLBOUT UNEVENTFUL. WHILE CLRED DIRECT SPA AND CLBING TO FL290, WE EXPERIENCED A TA IMMEDIATELY FOLLOWED BY AN RA PASSING FL283. WE IMMEDIATELY STOPPED THE CLB TO COMPLY WITH THE RA (DSND) AND WAS ALSO TOLD TO DSND TO FL280 BY ATC (ZTL), AND TOLD TO TURN TO 090 DEG HDG. WE WERE ON A 040 DEG HDG DIRECT SPA AT THE TIME OF THE RA. WE COMPLIED WITH THE INSTRUCTIONS, RESET THE ALT ALERTER TO REFLECT OUR NEW ALT (280 DEGS) AND WATCHED AN ACR B737 PASS OFF OUR L SIDE AT FL290, AT ABOUT 3-4 NM. HE TOO EXPERIENCED AN RA. SEVERAL MINS LATER, WE WERE RELEASED TO FL290 AND ON COURSE DIRECT SPA.

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.