Narrative:

Dfw and dal were in a south flow configuration. Weather was a factor as thunderstorms moved through the area. Dal was still reporting VFR weather and I was running visual approaches. The ar controller for dfw had deviations around weather and were descending their downwind over dal northwest bound. I noticed ar began descending aircraft into my airspace (dallas north satellites) with no coordination; but I understood that they may have been too busy with their final and the weather impacting them. I coordinated with ads tower to descend aircraft X to 2;000 early through their airspace in order to help the ar's get lower. With aircraft X at 2;000; he was headed to the final approach fix for runway 13L from the east/northeast of dal. I asked him to report the field in sight when he was about 6 miles out. He could not see the airport. I slowed him to 170 KTS or less and told him to turn to a 310 heading and that these were vectors for an ILS runway 13L. I typed ILS in aircraft X scratch pad and displayed the aircraft to AR2 (who was descending aircraft into my airspace with out coordination); to bring their attention to the plane so they would not descend on top of him. I noticed aircraft Y; assigned runway 17C at dfw begin descending out of 3;000 about 2 1/2 miles in front of my traffic. I turned aircraft X immediately to a 240 heading to diverge away and issued traffic. Aircraft X called traffic in sight and I applied visual separation. I then boxed aircraft X back around to set him up for an ILS 13L approach without further incident.arrivals were training to my understanding. We have pre-arranged coordination between dn and ar's at 4;000 with a display. This did not occur. Secondly; no coordination took place from the ar's to descend through my airspace. They were descending aircraft to 3;000 and lower. Arrivals came over to me later and stated that once they passed my traffic; they believed they had divergence and so decided to descend further. Ar's did not expect my traffic to turn to a downwind for an instrument approach. I stated that I lost visual approaches and had no choice but to turn him for an instrument approach and that they should have called and coordinated the use of my airspace.

Related reports:

Google
 

Original NASA ASRS Text

Title: Controller states another Sector did not coordinate as necessary with him leading to a loss of separation.

Narrative: DFW and DAL were in a south flow configuration. Weather was a factor as thunderstorms moved through the area. DAL was still reporting VFR weather and I was running visual approaches. The AR Controller for DFW had deviations around weather and were descending their downwind over DAL northwest bound. I noticed AR began descending aircraft into my airspace (Dallas North satellites) with no coordination; but I understood that they may have been too busy with their final and the weather impacting them. I coordinated with ADS tower to descend Aircraft X to 2;000 early through their airspace in order to help the AR's get lower. With Aircraft X at 2;000; he was headed to the final approach fix for Runway 13L from the east/northeast of DAL. I asked him to report the field in sight when he was about 6 miles out. He could not see the airport. I slowed him to 170 KTS or less and told him to turn to a 310 heading and that these were vectors for an ILS Runway 13L. I typed ILS in Aircraft X scratch pad and displayed the aircraft to AR2 (who was descending aircraft into my airspace with out coordination); to bring their attention to the plane so they would not descend on top of him. I noticed Aircraft Y; assigned Runway 17C at DFW begin descending out of 3;000 about 2 1/2 miles in front of my traffic. I turned Aircraft X immediately to a 240 heading to diverge away and issued traffic. Aircraft X called traffic in sight and I applied visual separation. I then boxed Aircraft X back around to set him up for an ILS 13L approach without further incident.Arrivals were training to my understanding. We have pre-arranged coordination between DN and AR's at 4;000 with a display. This did not occur. Secondly; no coordination took place from the AR's to descend through my airspace. They were descending aircraft to 3;000 and lower. Arrivals came over to me later and stated that once they passed my traffic; they believed they had divergence and so decided to descend further. AR's did not expect my traffic to turn to a downwind for an instrument approach. I stated that I lost visual approaches and had no choice but to turn him for an instrument approach and that they should have called and coordinated the use of my airspace.

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.