Narrative:

Near miss with an small transport commuter. We departed runway 27 at mgm with instructions to fly runway heading maintain 3000 ft. After contacting departure controller we were instructed to turn right to 030 degree and climb and maintain 10000 ft. All readbacks were correct and acknowledged. Aircraft was climbing at 2500-3000 FPM and turning right with a 25 degree angle of bank. Passing through 5200 ft, departure controller told us to maintain 5000 ft with traffic at 12 O'clock. We were able to stop the climb at 5700 ft with idle power and nose down. Conflicting traffic was spotted. Vertical separation 200-300 ft with no horizontal separation. We cleared traffic and were instructed to continue to climb to 10000. What appeared to cause the problem was departure controller inattn to departing traffic, and the climb capability of the medium large transport at low altitudes. He was also working military arriving traffic to kmgm. Both aircraft were under positive IFR control and both had departed kmgm.

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Original NASA ASRS Text

Title: CTLR RUNS AN ACR DEP TOO CLOSE TO A COMMUTER SMT DEP RESULTING IN LTSS.

Narrative: NEAR MISS WITH AN SMT COMMUTER. WE DEPARTED RWY 27 AT MGM WITH INSTRUCTIONS TO FLY RWY HDG MAINTAIN 3000 FT. AFTER CONTACTING DEP CTLR WE WERE INSTRUCTED TO TURN R TO 030 DEG AND CLB AND MAINTAIN 10000 FT. ALL READBACKS WERE CORRECT AND ACKNOWLEDGED. ACFT WAS CLBING AT 2500-3000 FPM AND TURNING R WITH A 25 DEG ANGLE OF BANK. PASSING THROUGH 5200 FT, DEP CTLR TOLD US TO MAINTAIN 5000 FT WITH TFC AT 12 O'CLOCK. WE WERE ABLE TO STOP THE CLB AT 5700 FT WITH IDLE PWR AND NOSE DOWN. CONFLICTING TFC WAS SPOTTED. VERT SEPARATION 200-300 FT WITH NO HORIZ SEPARATION. WE CLRED TFC AND WERE INSTRUCTED TO CONTINUE TO CLB TO 10000. WHAT APPEARED TO CAUSE THE PROBLEM WAS DEP CTLR INATTN TO DEPARTING TFC, AND THE CLB CAPABILITY OF THE MLG AT LOW ALTS. HE WAS ALSO WORKING MIL ARRIVING TFC TO KMGM. BOTH ACFT WERE UNDER POSITIVE IFR CTL AND BOTH HAD DEPARTED KMGM.

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.