TOAR sign offs on ATBs

Is anyone aware or have you had experience with signing off a TOAR while on an ATB. From what I’ve read the CG will issue a limited towing endorsement that is restricted to ATB’s only (if I’m interpreting this correctly). Is there anything that states which sign off can be left off or any guidance for this? I know it’s an issue for guys that come up the hawespipe or come right out of school to ATBs. I have two new guys with licenses that are working on their TOAR but we are on an ATB so I can only do so much.


Enclosure (7) of NVIC 3-16.

Thank you