Ack = A
Emma = M
AM = Air Mechanic.... it's a Brit thing
Jim

"Dave Butler" wrote in message
news:1147730057.758965@sj-nntpcache-3...
I'm working my way through "On Glorious Wings", a collection of short
stories
edited by Stephen Coonts.

In at least a couple of the stories from the first part of the 20th
century,
there are references to airplane mechanics as "Ack Emma". I think the
stories
where these references appeared had British authors, so it might be a Brit
thing.

Why are/were airplane mechanics called Ack Emma?

Thanks,

Dave