Helibiz,
If you look at CAAP 42ZC-1(0), Approved Pilot Maintenance for Class B aircraft, all will be revealed. Available from CASA online
here, as a small .pdf file. It's quite clear cut, and fitting and removal of dual controls is not approved. Unless, of course, you follow previous advice and have an MA issued.
For Class A aircraft (helicopters >2750kg) an MA is even required to do a pre flight to sign the Maintenance Release, so we are quite used to this procedure
Since CAAP 42 allows the changing of wheels and tyres, I sometimes wonder, though, as to the sense of some of these mandates! I did once do a duplicate on the BK117 cyclic and found it back to front, and also had a LAME put the pedal cover on with the pedals fully aft..........
Oh and Red Wine, MA's aren't free, unfortunately. General cost is about $250-300, but since CASA have just doubled their hourly charge rate, expect these prices to also double
