DEO have the rank of OFFCDT until finishing Pilots course. Then if you have a Degree you will be given the rank of FLGOFF, if you do not you will be a PLTOFF.
For ADFA graduates they are given PLTOFF on completion from ADFA unless they are Btech Aero students, who remain an OFFCDT. They only do two years at ADFA, using pilots course as the final year of their degree. Upon successful completion of Pilots course all ADFA graduates assume FLGOFF.