If it helps any, the fan swap for the TP-Link switch TL-SG3210XHP-M2 was for the same size fan, so airflow and speed should be the same, it’s just a much quieter fan. I went with the Noctua NF-A4x20 FLX 40x20mm. I’m in the same room as the switch, about 5 feet away, and the 7200 rpm hard drives in the NAS sound louder than the fans on the switch.
The fire fighting plane is the Canadair CL-415 (Super Scooper) – https://en.m.wikipedia.org/wiki/Canadair_CL-415
Plane getting water – https://m.youtube.com/watch?v=TLys5Wa7zhg
Plane dropping water – https://m.youtube.com/watch?v=2fH5kdShKNw