BEags
Just to clarify my thoughts, I don’t believe that an aerobatic rating would be needed though as the Grob TPs are NOT operated under EASA but under national provisions within the ANO as a Mil reg aircraft. As you probably know there is no requirement for an aerobatic rating in Annex II aircraft on Permit to Fly, the Mil airworthiness system it is operated under would be deemed the same. Further, I don’t believe the TPs are subject to any EASA Part regulations at all with respect to maintenance, licensing, operations or medicals? So actually a nationally accredited licence would suffice for the non-mil pilots rather than the more stringent EASA regs that you have pointed out.