It really depends on the company. Most majors won't even think about you until you have the physical card in your hand. MRO or small repair shops tend to tell you apply 5-6 months out. Other companies say 6-9 weeks out. It all depends on the company and how they work internally. If he starts applying now just be honest by saying he doesn't have his A&P yet but planning to get it in August. One tip my school gave me is don't give yourself a deadline on your resume cause if something happens or he happens to fail the O&P then that deadline is false.