I thought this might if been asked before so did a search and found..... nothing!!!
Anyway... the title more or less gives the question away but when departing on 24L then why does the controller on 119.4 want to always confirm the SID? If 24L had just been opened then I can appreciate the controller wanting to confirm the right SID was going to be attempted off 24L which might not of been the original clearance?
Otherwise in other situations if the correct SID was not read back then we would have obviously not of got past the stage of being handed off from delivery so why do you tower folks need a second readback?
I was thinking of a (unlikely) situation where delivery and tower might use two different sets of strips? Or is it something easier?
