> Class B criteria is > 300K operations annually - ~200K is KAUS
Under certain circumstances > 220k annual ops qualifies an airport for Class B status [1]. Austin's 2022 vs 2021 traffic is significantly higher [2]. When you include KEDC (Austin Exec Airport) and KGTU (Georgetown Municipal), the traffic certainly appears to exceeds the thresholds in question [3][4][5]. I didn't bother to look through the other airports within the area.
> I'm curious as to what you think upgrading KAUS to Class B would exactly accomplish, especially in this scenario? This was a runway localized mistake by the controller. Also, the word in the ATC community is this tower controller had been moved around the NAS multiple times as a problem child.
Designation as a Class B changes the care with which the airspace is managed and more importantly, staffed [6][7]. Perhaps the problem ATC is fine for a less busy area, perhaps the Tower staffing could use a little more oomph in the morning hours. There might also be additional RWLS and ARIWS requirements for Class B airports (needs regulatory research - maybe ChatGPT can give us pointers since this is all supposed to be public info!).
> KSAT's airspace (not the airport, the airspace) farther south is FAR busier than KAUS and is considered some of the busiest airspace in the county due to multiple military fields in the area, extensive military training, etc. And it's also Class C airspace.
The FAA Sectional for KSAT (San Antonio) shows that there are multiple Special Use Airspaces (Randolph, Laughlin, Crystal/North, Kingsville MOAs) to separate the civilian traffic from military airspace, and the military has their own controllers [8]. Caution: 111MB file.
[1] https://www.faa.gov/air_traffic/publications/atpubs/pham_htm...
[2] https://www.austintexas.gov/news/november-2022-passenger-car...
[3] https://www.gcr1.com/5010ReportRouter/EDC.pdf
[4] https://www.gcr1.com/5010ReportRouter/GTU.pdf
[5] https://en.wikipedia.org/wiki/Georgetown_Municipal_Airport
[6] https://www.faa.gov/air_traffic/publications/atpubs/pham_htm...
[7] https://www.faa.gov/air_traffic/publications/atpubs/pham_htm...
[8] https://aeronav.faa.gov/visual/02-23-2023/PDFs/San_Antonio.p...