Under what condition is an Airman promoted to Senior Airman (SrA)?

An Airman is promoted to Senior Airman (SrA) once they have met all specific requirements set forth by the Air Force. This includes a combination of time in service, time in grade, and passing performance evaluations, as well as fulfilling any other criteria outlined in the promotion system. Meeting these requirements is crucial as it ensures that the Airman is ready for the increased responsibilities that come with the next rank.

The promotion process is structured to ensure that candidates demonstrate not just time served, but the necessary skills and performance to handle the duties of a Senior Airman. Thus, the correct condition for promotion to SrA revolves around the fulfillment of these outlined requirements rather than factors like supervisor notification or participation in competitions, which do not directly influence the promotion eligibility criteria.