Originally Posted by
Uplinker
The F/O, during their line training, would naturally assume the Cap was a TRE...
You do not need to be TRI or TRE in order to perform the duty of a line training captain. So, just like with a first officer under supervision, nothing will be entered in your license. This whole flying under supervision thing is company specific and not easily visible outside the company (and as in this case: not even inside the company). In the previous company I flew for I got "promoted" to line training captain by a phone call the night before a flight when they could not find another qualified captain for a newly hired FO.