Narrative:

ZZZ landing south. Heavy arrivals. I sent aircraft X around due to inadequate separation on final. Atpa (air traffic spacing tool) triggered to red and proceeded to go below legal spacing for arrivals. The runway is a reduced spacing arrival runway of 2.5 miles. I sent aircraft X around as soon as the atpa showed less than the legal separation to avoid the go around inside of a half mile and while still at an altitude to provide safe operation of the aircraft.the lack of real adequate spacing on the finals at this airport has been an issue for years. While the TRACON controllers at fancy that tower 'shall' provide visual separation if the lateral separation drops below the allowed legal separation to avoid having an operation loss; the runway spacing separation as allowed in the 7210.3 is commonly broken forcing the flight crews to be required to brake hard; change landing points; change landing speeds; or somehow maneuver the aircraft to exit the runway for aircraft close behind. I personally have heard the users express concern about being required at the last minute to hurry off of the runways or being required to overly brake the aircraft.TRACON has for a long time failed to provide adequate legal spacing to all arriving runways.I have done everything in my power to try and convince management to do something about this issue. Every manager since my arrival has vowed to fix this issue. All have failed. This is an ongoing systemic issue here. ZZZ has the highest rate of 'go-arounds' in the NAS. A good portion contributed to inadequate spacing on final. It will someday result in a catastrophic accident.

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Original NASA ASRS Text

Title: Tower Controller reported that a loss of spacing on final resulted in a go around.

Narrative: ZZZ Landing South. Heavy arrivals. I sent Aircraft X around due to inadequate separation on final. ATPA (Air Traffic Spacing Tool) triggered to red and proceeded to go below legal spacing for arrivals. The runway is a reduced spacing arrival runway of 2.5 miles. I sent Aircraft X around as soon as the ATPA showed less than the legal separation to avoid the go around inside of a half mile and while still at an altitude to provide safe operation of the aircraft.The lack of real adequate spacing on the finals at this airport has been an issue for years. While the TRACON controllers at fancy that Tower 'shall' provide visual separation if the lateral separation drops below the allowed legal separation to avoid having an operation loss; the runway spacing separation as allowed in the 7210.3 is commonly broken forcing the flight crews to be required to brake hard; change landing points; change landing speeds; or somehow maneuver the aircraft to exit the runway for aircraft close behind. I personally have heard the users express concern about being required at the last minute to hurry off of the runways or being required to overly brake the aircraft.TRACON has for a long time failed to provide adequate legal spacing to all arriving runways.I have done everything in my power to try and convince management to do something about this issue. Every manager since my arrival has vowed to fix this issue. All have failed. This is an ongoing systemic issue here. ZZZ has the highest rate of 'go-arounds' in the NAS. A good portion contributed to inadequate spacing on final. It will someday result in a catastrophic accident.

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.