Re: UK NPPL(M)
I have a UK NPPL(M) and I "validated" it with the IAA.
U need a Class 2 medical and the RT.
I found the RT course excellent and informative and well worth doing.
The NMAI (National Microlight association Ireland) handle the application for validation of the UK licence on their members part, it is quite straightforward.
I flew the X-Air for over 100 hours last year and it is an excellent little aircraft, very easily flown, can take off/land extremely short and is a robust little plane... I enjoyed it immensely, I bought a C42 earlier this year.
I am un-aware of any groups operating in the South, however there is a few aircraft in joint ownership throughout the country. There is a group operated jabiru powered thruster in Kernan Aviation in Armagh, and I believe that they may be going to have a C42 group establishing soon.
There is a guy up here in Donegal who is the Importer/Dealer for X-Air and he would definately be the man to talk to. His web site is http://www.XairIreland.Com
where you can get contact info for him, his name is Seamus O'Donnell.