Perhaps a question for ATC to answer, how do they differentiate (indeed, should they ?) a first student solo from a second or more student solo?
Usually, the Instructor will give ATC a 'heads up' that this student is a potential First Solo when booking out, or tell them on the radio just before you go.
I suppose the ATC view would be that whilst not ideal, the solo student was up to dealing with whatever emergencies or instructions were given otherwise the Instructor wouldn't allow the student to go solo.
Nobody should be sent solo unless they are prepared for anything that could reasonably be expected to happen to them.
MJ
