A rationalisation of repair work on RAF Harrier and Tornado jets has saved the Ministry of Defence £1.4 billion and cut the time needed to fix damaged planes, according to a new report.
Operational availability of Harriers, which was already below the required level, dipped at the outset of the change programme in 2003, but since the end of last year the number of planes fit for action has met the RAF's targets, said the National Audit Office report.
However, it raised some concern about the MoD's ability to find the highly skilled workers it needs to man repair centres, as well as the timely supply of spare parts for both aircraft.
But Auditor General Sir John Bourn gave a generally positive assessment of the impact of the changes.
"The Ministry of Defence has made significant reductions in the cost of repairing and maintaining its jets, whilst broadly maintaining aircraft availability," said Sir John.
"On this basis, the changes represent value for money and underline the benefit of the MoD's approach to partnering with industry and rationalising repair activity.
"However, risks remain and it is important for the MOD to continue to manage these so as not to compromise the good work it has done in this area."
Under the changes, the MoD has established a single site for all major repairs and upgrades on each of the jet fleets - RAF Marham in Norfolk for Tornados and RAF Cottesmore in Rutland for Harriers. Operational maintenance and minor repairs are carried out at squadrons' home bases.
New techniques have been introduced, including "pulse lines" similar to the production lines used in the car industry, and private contractors are working with military personnel in teams based at main RAF bases.
Defence equipment and support minister Lord Drayson welcomed the report. He said: "Transforming the way we support Harrier and Tornado has reaped significant benefits, not only improving performance but also enabling the Department to save more than £1.4 billion."
