Actually it wasn't the "Tuskegee airman" as that unit hadn't been formed at the time.
But it was black servicemen involved, at time of @1932;
EXCERPT:
In 1932, the USPHS, working with the Tuskegee Institute, began a study to record the natural history of syphilis. It was originally called the “Tuskegee Study of Untreated Syphilis in the Negro Male” (now referred to as the “USPHS Syphilis Study at Tuskegee”). The study initially involved 600 Black men – 399 with syphilis, 201 who did not have the disease. Participants’ informed consent was not collected. Researchers told the men they were being treated for “bad blood,” a local term used to describe several ailments, including syphilis, anemia, and fatigue. In exchange for taking part in the study, the men received free medical exams, free meals, and burial insurance.
By 1943, penicillin was the treatment of choice for syphilis and
becoming widely available, but the participants in the study were not offered treatment.
...
Tuskegee Syphilis Study Timeline
www.cdc.gov