I have recently been controlling on TS and have experienced many aircraft transmitting “stand by” as their first transmission. They have used it when they are sitting at the gate or when tuned to your frequency. Without any prior contact with ATC.
STANDBY is not to be used as a first transmission.
- If youre sitting at a gate atc does not care til you need to start maneuvering.
- If you have just tuned in to tower/appr/dep (any frequency for that matter) all you need to advise is your intentions.
Saying standby as an initial transmission does not do anything. Stand by is to be used when ATC has given an instruction/clearance and you need a moment to accept said instruction/clearance.
Also Standby is not to be used to ignore ATC commands and land your airplane. If you dont like having ATC somewhere, just divert.