All in service frontline military aircraft are deemed to be available for operations at various states of readiness, ranging from those that are available immediately to those that may require a period of notice to deploy.
For the total number of frontline in service military aircraft, I refer the hon. Member to the answer I gave on 3 June 2009, Official Report, column 4MC, to the hon. Member for Woodspring (Dr. Fox). For the number of aircraft available for training, I refer the hon. Member to the answer I gave on 29 June 2009, Official Report, column 46W, to the hon. Member for Woodspring.