Narrative:

Aircraft X was cleared for the visual approach to runway 4 at gsp over mulde FAF. The aircraft was descending out of 2500 ft. At the same time aircraft Y appeared to be in right traffic for gmu. Aircraft Y suddenly made a turn out the 'authorized' southeast exit of their delta airspace towards the final approach fix. By that time aircraft X was slowed for landing in a critical stage of flight descending out of 2100 ft. VFR; aircraft Y was at 1900 ft. Their distance closed to within a mile. I called gmu tower to ask if they called traffic and they said they had terminated the aircraft at their delta airspace as aircraft X (which is visible on their dbrite) descended into him. Separation reduced to about 200 ft and less than a mile. Aircraft X in a critical stage of flight had to add power and climb while on final to avoid a possible collision. We are now averaging a daily loss of separation with a daily risk of collision which is not a safe operation. We have recommended everything we can think of and gotten no response. The easiest recommendation is for the contract tower to have these aircraft pass behind our traffic but they seem to not be willing to be bothered to prevent collisions and have refused to work with us. So the only other option would be requiring aircraft landing here to remain at or above 2800 ft until the final approach fix to provide 500 ft separation from the 2300 ft VFR traffic but that has the arrivals high on the approach in a critical stage of flight. Something has to be done!

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Original NASA ASRS Text

Title: GSP TRACON Controller reported a loss of separation after a nearby Tower allowed a VFR aircraft to fly towards the FAF for GSP approaches.

Narrative: Aircraft X was cleared for the Visual Approach to Runway 4 at GSP over MULDE FAF. The aircraft was descending out of 2500 ft. At the same time Aircraft Y appeared to be in right traffic for GMU. Aircraft Y suddenly made a turn out the 'authorized' Southeast exit of their Delta Airspace towards the Final Approach Fix. By that time Aircraft X was slowed for landing in a critical stage of flight descending out of 2100 ft. VFR; Aircraft Y was at 1900 ft. Their distance closed to within a mile. I called GMU tower to ask if they called traffic and they said they had terminated the aircraft at their Delta Airspace as Aircraft X (which is visible on their DBRITE) descended into him. Separation reduced to about 200 ft and less than a mile. Aircraft X in a critical stage of flight had to add power and climb while on final to avoid a possible collision. We are now averaging a daily loss of separation with a daily risk of collision which is NOT a safe operation. We have recommended everything we can think of and gotten no response. The easiest recommendation is for the contract tower to have these aircraft pass behind our traffic but they seem to not be willing to be bothered to prevent collisions and have refused to work with us. So the only other option would be requiring aircraft landing here to remain at or above 2800 ft until the final Approach Fix to provide 500 ft separation from the 2300 ft VFR traffic but that has the arrivals high on the approach in a critical stage of flight. Something has to be done!

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.