If you want to join up with the view of continuing in that career once you leave, then I would suggest that a communications trade would be a better choice.
For the foreseeable future there is going to be a demand for those skills, whether it involves networks or what is at the end of them. Plus in the forces, you can go anywhere with those skills (admittedly not always good). Unless on Ops, some trades are limited where they operate and with the cutbacks, the choices are getting smaller.
Nothing wrong with being an aircraft engineer but it's not what it used to be, both in the forces or civvy street.