Yes, we are allowed to do certain maintenance tasks under part 145. When the situation arises, we have to read a training document for the related AMM task on the spot and then perform the tasks supervised by a maintaince engineer by phone.
To put thing in perspective, I think the easiest task we are allowed to perform is pulling and clipping a cb, and the most difficult one swapping out two display units.
This is a legacy European operator, short haul aircraft.