There are now just four known living WWI veterans: two British, one Canadian, and one American:

http://en.wikipedia.org/wiki/List_of_last_surviving_World_War_I_veterans_by_country

It turns out that while Henry Allingham was a mechanic, not a pilot, the Canadian veteran is a pilot! Probably the oldest… but surely not the first pilot.

Who is the first living pilot? And who is the oldest current holder of a pilot medical?