What is the difference between the terms FCL (Flight Crew Licensing) and Aircrew?
Aircrew is the common term for "Flight Crew" and "Cabin Crew".
The new Implementing Rules cover both flight crew and cabin crew, and were published as Commission Regulation (EU) No 1178/2011 laying down technical requirements and administrative procedures related to civil aviation aircrew and its amending Commission Regulation (EU) No 290/2012.
Annex I to the above-mentioned Regulation on Aircrew contains Implementing Rules for Flight Crew (Part-FCL).
Annex V to this Regulation on Aircrew contains Implementing Rules for Cabin Crew (Part-CC).