Hi Keygrip,
Nice question! It's always nice with a small break here in the office
You say you want chapter and verse in the book.. ok, a bit long, but here goes:
Your question is based on the text in FCL 1 Amd 2 that says:
(C) a training flight of at least one hour’s duration with a FI(A) or CRI(A). This flight may be replaced by any other proficiency check or skill test for a class or type rating.]
The reference to this is FCL 1.245 (c)(1)(ii)(C). But, if you go back "up" to FCL 1.245(c)(1), the book says:
(1) All single-engine piston aeroplane class ratings (land) and all touring motor glider’s ratings – Revalidation. For revalidation of single-pilot single-engine piston aeroplane (land) class ratings and/or touring motor glider class ratings the applicant shall on single-engine piston aeroplanes (land) and/or touring motor gliders:
(My underscore)
As this is "higher" in the hierarcy, it automatically applies to any other specifications following "below" this one. So, I guess that kind of settles the matter. In addition, your question proposes to mix credits from two different categories of A/C, something that always is specifically mentioned where this is intended to be possible. Sorry. (But thanks for a nice break anyway
)
Cheers,
redBar1