You are reading a single comment by @Thrustvector and its replies.
Click here to read the full conversation.
-
Sorry, missed this at the time. 'Air Mechanic' was one of the Royal Naval Air Service enlisted ranks, so that would be the first place to look; if your great-grandfather was transferred to the RAF he'd also have an RAF service record. The National Archives have some decent online guides to tracing family service members - the RNAS one's here: http://www.nationalarchives.gov.uk/help-with-your-research/research-guides/royal-naval-air-service-ratings/ - which suggests using the search forms here: http://www.nationalarchives.gov.uk/help-with-your-research/research-guides/royal-navy-ratings-service-records-1853-1928/
For any eventual RAF service records, they suggest the best place to look is on Findmypast, which has digitised most of them.
Thrustvector
“Air Mechanic”, apparently