Narrative:

After departure turned to a heading of 210 degree, per SID, contacted departure control. Departure reported traffic at 11 O'clock at 4500'. This was as we were climbing through 4000' at approximately 210 KTS at a rate of 4000 FPM. The traffic appeared at our 12 O'clock position at our altitude. The captain immediately entered into a 45 degree bank turn to the right while continuing climb at maximum rate. This action was coordination with departure who gave us a heading of 255 degree to clear the traffic. We lost sight of the traffic after turning the aircraft. We felt that we passed over the traffic at a very close range. This incident occurred because a controller either allowed VFR traffic to traverse an IFR departure route or allowed an IFR departure to proceed towards a VFR target at a known altitude of 4500'.

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Original NASA ASRS Text

Title: SEE AND AVOID. NMAC BETWEEN ACR-MLG AND GA-SMA.

Narrative: AFTER DEP TURNED TO A HDG OF 210 DEG, PER SID, CONTACTED DEP CTL. DEP RPTED TFC AT 11 O'CLOCK AT 4500'. THIS WAS AS WE WERE CLBING THROUGH 4000' AT APPROX 210 KTS AT A RATE OF 4000 FPM. THE TFC APPEARED AT OUR 12 O'CLOCK POS AT OUR ALT. THE CAPT IMMEDIATELY ENTERED INTO A 45 DEG BANK TURN TO THE R WHILE CONTINUING CLB AT MAX RATE. THIS ACTION WAS COORD WITH DEP WHO GAVE US A HDG OF 255 DEG TO CLR THE TFC. WE LOST SIGHT OF THE TFC AFTER TURNING THE ACFT. WE FELT THAT WE PASSED OVER THE TFC AT A VERY CLOSE RANGE. THIS INCIDENT OCCURRED BECAUSE A CTLR EITHER ALLOWED VFR TFC TO TRAVERSE AN IFR DEP ROUTE OR ALLOWED AN IFR DEP TO PROCEED TOWARDS A VFR TARGET AT A KNOWN ALT OF 4500'.

Data retrieved from NASA's ASRS site as of August 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.