My guess is that he is ex-mil... to account for the resume you've
listed. It DOES sound weird tho.. You would think the ATP would override
the commercial multi CLT..

As for which one it adds on to: My guess is.. which ever one he wants..
He can train for a ASEL ride to private, commercial or ATP standards
provided he has the time in type for the add-on. (havent looked at the
applicable reg for this one as to any required hours).

I'm guessing he just has to declare in advance which ride he is taking,
then meet the standards for it.

Dave

Emily wrote:
And for some reason he's picked me for the honor of training him.

But I'm a little confused on one thing. He claims to have a
commercial-multi, limited to centerline thrust, and an ATP multi,
unrestricted, with 737 and 757/767 type ratings. I wasn't aware that
you could have both those certificates...is that true?

And if it is, onto which certificate does the single engine airplane add
on go?

And one last question. I know I'd never, ever, train a primary student,
as long as it's been since I instructed, but this shouldn't be a huge
deal, right?