Narrative:

A large transport; [aircraft X]; was handed off level at 14;000 for traffic southwest bound level at 15;000. The traffic level at 15;000 was a small aircraft; [aircraft Y]; which had to land cae. The departing large transport should have been climbing to FL230 southbound. The radar controller in my opinion took action to late to descend the aircraft once he was in my airspace. The radar controller eventually descended the small aircraft through the altitude of the large transport. Before the two aircraft lost separation the radar controller requested 'the [large transport] [turn] 30 degrees right and climb him to 16;000). The radar requested that we (training d-side) not take the handoff on the large transport. The large transport turning 30 [degrees] right and climbing to 16;000 I believe was what the controller was counting on for the separation. If the R72 controller had turned the [small aircraft] south to a 180 heading it would have solved the problem. The large transport was issued 16;000 by locas (ZTL T30); the pilot climbed through 16;000 and lost separation with [a small transport; aircraft Z]. However the large transport pilot did report level before separation was lost.the controller at R72 is a veteran controller. However after years of only working radar or d-side for 16 hours a month because of assigned details it has diminished his skill level.

Google
 

Original NASA ASRS Text

Title: Three ZJX ARTCC controllers describe separation loss due to communication problem between controllers during a descent of one aircraft near their landing airport and the climb out of a departure.

Narrative: A large transport; [Aircraft X]; was handed off level at 14;000 for traffic southwest bound level at 15;000. The traffic level at 15;000 was a small aircraft; [Aircraft Y]; which had to land CAE. The departing large transport should have been climbing to FL230 southbound. The Radar Controller in my opinion took action to late to descend the aircraft once he was in my airspace. The Radar Controller eventually descended the small aircraft through the altitude of the large transport. Before the two aircraft lost separation the Radar Controller requested 'the [large transport] [turn] 30 degrees right and climb him to 16;000). The Radar requested that we (training D-Side) not take the handoff on the large transport. The large transport turning 30 [degrees] right and climbing to 16;000 I believe was what the Controller was counting on for the separation. If the R72 Controller had turned the [small aircraft] south to a 180 heading it would have solved the problem. The large transport was issued 16;000 by Locas (ZTL T30); the pilot climbed through 16;000 and lost separation with [a small transport; Aircraft Z]. However the large transport pilot did report level before separation was lost.The Controller at R72 is a veteran controller. However after years of only working radar or D-Side for 16 hours a month because of assigned details it has diminished his skill level.

Data retrieved from NASA's ASRS site 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.