I'm not a genealogist, but those who are seem to be able to access an online database of R.Ae.S Pilots' Certficates (q.v.
http://sussexhistoryforum.co.uk/index.php?topic=16921.0). I'm afraid that I don't know on which website this is to be found. But assuming that you can ascertain this, no doubt you can search to see if a certificate was issued to Wells.