Hi mate,
Sorry can't exactly give you advice on the specifics of the job as I don't do it. But generally read up on what you think is relevant. Don't over do it though as some people have a habit of reading, reading and reading even more then when it comes to the interview they struggle to remember anything and just mumble & stumble on.
Be confident. This is VERY important. Now to me theres a difference between confident and cocky. Don't answer questions and solve problems as if they'd be easy. Instead be objective and put forward you're best opinion and advice that would solve a problem. If you've got low experience then you can only really guesstimate as to what would be the best solution.
Generally big interviews give you questions which are embedded with prioritisng and expendable traits. i.e. what is the most important and needs immediate priority and who is the most expendable and is not needed. If you can do this but justify your answers then you should be ok and this can show you're confident to make the decisions. Remember a good employee/manager is someone who can make the decision regardless or whether it's right or wrong but also stick up for the decision and keep the wheels turning as effeciently as possible after that decision. IMHO anyway.
Don't forget in the aviation industy you will never please everybody. In fact you'll probably upset more people than please but so long as the planes keep moving and flying, your boss should be happy.
Be yourself too. Don't be afraid to talk about your weak points. The fact that you know you have some, shows that you know you can always improve on areas. However try to balance this with good points. Punctual, eye for detail etc. Share you experiences and ambitions. If you have a real drive to get somewhere, like ATC or Pilot, then you will find it easy talk about the subject really enthusiastically and energetically.
Try not to get too nervous. I know it's hard but go into the interview looking forward to it as a learning experience. If you can remain calm and confident then this should overpower any nervous feelings.
Hopefully people will add more to this and be advised my advice may not be the best. However it is my personal experience on how I handle interviews.
Hope it helps mate and good luck.
