The most authoritative answer in 2024
-

-
Naomi Smith——Works at TechStart Incubator, Lives in Tel Aviv, Israel.
Moving up the Air Force Ranks: The Air Force requires for Airman First Class to have
28 months Time-in-Grade (TIG), or
36 months TIS and
20 months TIG. The average service-wide active duty time for advancement to the rank of Senior Airman is
three years.
read more >>
About “28 months、36 months、20 months”,people ask:
QuesHub is a place where questions meet answers, it is more authentic than Quora, but you still need to discern the answers provided by the respondents.