If the scope of the AD can be classed as "simple" then the Part 145 Quality Manager may permit a few trained pilots to perform the AD on landing at a remote location where there is no suitable maintenance support, for the limit of that specific operation or some short training period. The limits of the AD action and the time period should be stated on the approval sheets.
This has happened for a large UK charter line when landing at a remote airport once per two weeks - Not enough business for an outstation and no suitable contractor.
Often an engineer will be placed on the flight for the specific detailed inspection/action where this is not allowed for pilots to conduct them.
Hope this helps