UA Flight 213 had stuck mic on KSFO Final followed by more frequency problems.

[Aviator787SP]

Frequency kept screwing up because of the stuck mic. The controller told everything to stop talking at 12 minutes, 54 seconds. The controller is put in a precarious position. Aircraft had to go around at 14 minutes, 24 seconds. At 24 minutes, 55 seconds, pilot accidentally calls tower instead of NORCAL and the controller says, uh hello.