Tiger_mate,
What you describe is FULL Operational Capability.
Initial Operational Capability (when I worked in an area that was related to this project) was being discussed. The general feeling at the time was Initial capability should be defined as some part of the force to the standard you describe (crews trained, ready for war etc), be that the capability to put a standard "block" (say - 4 birds onto the LPA) ready to do "operational" stuff was available.......................