The information requested is detailed in the attached table.
The Forward Available Fleet comprises aircraft which are serviceable and those which are short-term unserviceable. Short-term unserviceable aircraft are undergoing minor works, forward maintenance or any other rectification or technical inspection work that can arise on a day-to-day basis. Dependant on the nature of the work, aircraft may be designated as requiring either 'short-term maintenance' or 'short-term works'.
The Sustainment Fleet numbers represent those aircraft in the Depth Fleet, which comprises aircraft which are undergoing planned depth maintenance or upgrade programmes.
Decommissioning and disposal are part of the same process and are therefore grouped together.