“In Service” has been taken to mean the effective fleet which covers all aircraft barring those which are redundant, declared as surplus or awaiting disposal.
“Fit for Purpose” aircraft are those in the forward fleet ie available to Front Line Commands for operational and training purposes (including those that are classed as “short term unserviceable”) that are considered capable of carrying out their planned missions on a given date.
The number of helicopters “Fit for Purpose” varies from day to day due, primarily, to routine maintenance requirements. Therefore, the figures in the table are averages for May 2009:
Helicopter type/mark In-Service1 (effective fleet) Fit for Purpose—target Fit for Purpose—actual2 Augusta 109 4 2 3.3 Apache 67 18.1 14.0 Chinook Mk2/2a 40 19.0 18.4 Gazelle 42 15.4 20.1 Lynx Mk3/Mk8 61 26 26.4 Lynx Mk7/9 94 35.0 23.0 Merlin Mk1 42 20 14.1 Merlin Mk3/Mk3a 28 12.4 10.7 Puma 34 17.5 15.9 Sea King Mk3/3a 25 17 10 Sea King Mk4/6 42 18.0 16.2 Sea King Mk5 15 7.5 7.4 Sea King Mk7 13 6.5 5.9 1 As at 1 June 2009 2 Averages for May 2009
Operational capability is measured in terms of flying hours rather than the number of airframes available. All rotary wing operational requirements are currently being met.
The Wildcat will replace the current Army and Royal Navy Lynx helicopter fleets from 2014 and 2015 respectively.
No contract for the upgrade of the Puma helicopters has been placed.