Originally Posted by
bluesky24
This does not include flights when you are being given flight instruction by a CFI.
It does if you are already properly rated in the aircraft, like private pilot doing a commercial certificate or instrument rating.
Ultimately, outside of using them to get a certificate or rating, these are whatever airlines want them to be for the purposes of their application. Definition for PIC is in part 61. There is no "TPIC".