The RAF mans three 13 aircraft Harrier GR7 squadrons (and a big OCU and an OEU) with ease, and with lots of youngsters in the pipeline. Manning two eight aircraft SHar units was already causing the RN severe problems. Unless the manning level per 'frame is very different, expecting a 50:50 mix is a tad optimistic. 25% is regarded by many as a best case expectation of RN manning within JFH.