Actually I still find it difficult to get my head around the purpose and legality of the various documents that make up Part-NCO (or Part-FCL or any of the other parts for that matter). Not being helped by the various countries that have notified a derogation period. It's extremely hard to figure out which bits apply to me, right here and now, and which bits do not.
The EASA website does't help much. They did put up a graph on how the whole document framework is built up, but did not make that graph clickable.
Edited: Now that you mention it, I checked and the intercom requirement is indeed only applicable to airplanes and helicopters, not to balloons and gliders.
Last edited by BackPacker; 31st Oct 2012 at 21:00.