Mandi Hamlin, 37, had demanded an apology and her Los Angeles-based attorney sent a letter to the TSA this week requesting a civil rights investigation.
Hamlin said she was trying to board a flight from Lubbock to Dallas on Feb. 24 when she was scanned by a TSA agent after passing through a larger metal detector without problems.
The female TSA agent used a handheld detector that beeped when it passed in front of Hamlin's chest, the Dallas-area resident said.
Hamlin said she told the woman she was wearing nipple piercings. The agent then called over her male colleagues, one of whom said she would have to remove the jewelry, Hamlin said.
Hamlin said she could not remove them and asked whether she could instead display her pierced breasts in private to the female agent. But several other male officers told her she could not board her flight until the jewelry was out, she said.
Hamlin was taken behind a curtain and managed to remove one bar-shaped piercing but had trouble with the second, a ring. She said the officer gave her pliers to remove the ring, a process which caused a physical pain.
The TSA said Friday in a statement on its Web site that the officers properly followed procedures, but that the procedures must change. In the future passengers can either allow a visual inspection of their piercings, or remove them, the agency said.