I'm assuming he was not commissioned.
His medical section was held in his Form 280 Certificate of Service.
In accordance with Parliament schedules of document retention/destruction it was destroyed a given number of years after he left the service.
All other documents in his Form 280 were also pruned as time went on until the only document retained was the index wrapper sheet Form 543.
This document will be what disclosures has sent you and is the only surviving part of his Form 280.
A few years ago I extracted the official regulations on the content/update and destruction of Form 280 and posted on Rafcommands web site.
http://www.rafcommands.com/reference/form-280-certificate-of-service-airman/There is quite a bit of information that can be gleaned from Form 543 and it gives leads to other documents at The National Archives that give the role, conditions and notable events that happened to each formation he was posted to.
If you are happy to do so then an image of the Form 543 posted here will allow some of the more obscure abbreviations to be explained.
Ross
