Narrative:

Near miss of about 1 mi due to vectors over a satellite airport. Departure control never gave us a higher altitude after departing atl. Vectored us toward pdk at 4000 ft. Received TCASII alert, acquired target visually. Climbed 200 ft thinking other aircraft was overshooting altitude, but when other traffic still continued climbing, I descended 300 ft and turned 20 degrees left to avoid collision. Traffic passed about 1 mi in front of us. Supplemental information from acn 543318: heavy traffic volume in the atlanta area with departure off of satellite airports heavier than normal due to special events. There were several wbound jets and I was trying to achieve the required in-trail spacing with the ZTL. I had stopped departures off of atl in order to work out some issues with ZTL 'west departure.' the last atl departure was an E120 climbing to 7000 ft. The jets off of atl climb to 10000 ft, and I did not issue any climb instructions to CAR66 due to volume. When CAR66 was 2 mi east of pdk, the conflict alert went off for CAR66 and a learjet departure off of pdk going eastbound. I then climbed CAR66 and advised the supervisor in charge of the situation.

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Original NASA ASRS Text

Title: DEPARTING E120 FLC OFF ATL INITIATE EVASIVE MANEUVER DUE TO CLBING LEARJET FROM A SATELLITE ARPT.

Narrative: NEAR MISS OF ABOUT 1 MI DUE TO VECTORS OVER A SATELLITE ARPT. DEP CTL NEVER GAVE US A HIGHER ALT AFTER DEPARTING ATL. VECTORED US TOWARD PDK AT 4000 FT. RECEIVED TCASII ALERT, ACQUIRED TARGET VISUALLY. CLBED 200 FT THINKING OTHER ACFT WAS OVERSHOOTING ALT, BUT WHEN OTHER TFC STILL CONTINUED CLBING, I DSNDED 300 FT AND TURNED 20 DEGS L TO AVOID COLLISION. TFC PASSED ABOUT 1 MI IN FRONT OF US. SUPPLEMENTAL INFO FROM ACN 543318: HVY TFC VOLUME IN THE ATLANTA AREA WITH DEP OFF OF SATELLITE ARPTS HEAVIER THAN NORMAL DUE TO SPECIAL EVENTS. THERE WERE SEVERAL WBOUND JETS AND I WAS TRYING TO ACHIEVE THE REQUIRED IN-TRAIL SPACING WITH THE ZTL. I HAD STOPPED DEPS OFF OF ATL IN ORDER TO WORK OUT SOME ISSUES WITH ZTL 'W DEP.' THE LAST ATL DEP WAS AN E120 CLBING TO 7000 FT. THE JETS OFF OF ATL CLB TO 10000 FT, AND I DID NOT ISSUE ANY CLB INSTRUCTIONS TO CAR66 DUE TO VOLUME. WHEN CAR66 WAS 2 MI E OF PDK, THE CONFLICT ALERT WENT OFF FOR CAR66 AND A LEARJET DEP OFF OF PDK GOING EBOUND. I THEN CLBED CAR66 AND ADVISED THE SUPVR IN CHARGE OF THE SIT.

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.