Harrier II Replacement Program

Harrier II Replacement Program
Name	Harrier II Replacement Program
Country	United Kingdom / United States
Status	Historical procurement program
Initiated	2000s
Primary users	Royal Navy, United States Marine Corps

Harrier II Replacement Program

The Harrier II Replacement Program was a multinational effort to identify, acquire, and field a successor to the McDonnell Douglas AV-8B Harrier II and BAE Systems Harrier II families operated by the United States Marine Corps and the Royal Navy. Spanning strategic debates in London and Washington, the program intersected with procurement choices made by the Ministry of Defence (United Kingdom), the United States Department of Defense, and allied partners including NATO members and the Spanish Air Force.

Background and Rationale

The retirement timelines for the AV-8B Harrier II and the Harrier GR7/Harrier GR9 variants converged with evolving threats from the People's Liberation Army Air Force, Russian Aerospace Forces, and regional powers such as Iran. Aging airframes, rising maintenance costs at RAF Marham and Marine Corps Air Station Yuma, and capability gaps in vertical/short takeoff and landing (V/STOL) missions drove requirements. Lessons from operations over Operation Enduring Freedom, Operation Iraqi Freedom, and carrier operations from the HMS Invincible and HMS Illustrious highlighted integration needs with Queen Elizabeth-class aircraft carrier concepts, expeditionary basing like Naval Station Rota, and interoperability frameworks such as the Combined Joint Task Force.

Program Goals and Requirements

Planners set objectives to deliver a platform with expanded sensor fusion analogous to Lockheed Martin F-35 Lightning II systems, survivability against S-400 Triumf and SA-20 Gargoyle class threats, and payload flexibility for precision munitions like the Joint Direct Attack Munition and the AGM-65 Maverick. Emphasis was placed on sortie generation rates compatible with Carrier Strike Group tempo, reduced logistics footprint compared to legacy Harrier sustainment at Dunsfold Aerodrome depots, and certified deck handling aboard HMS Queen Elizabeth and USS Wasp (LHD-1). Requirements included interoperability with Link 16, Joint Tactical Information Distribution System, and compatibility with Joint Strike Fighter sustainment models.

Candidate Aircraft and Evaluation

Shortlisted concepts ranged from conventional takeoff and landing derivatives to advanced V/STOL demonstrators. Evaluated types included derivatives of the Lockheed Martin F-35B Lightning II short takeoff/vertical landing (STOVL) variant, proposed upgrades to the BAE Systems Sea Harrier lineage, thrust-vectoring concepts from Rolls-Royce propulsion studies, and proposals by firms such as Boeing, Northrop Grumman, Dassault Aviation, Saab, and Embraer. International prototypes and demonstrators like Rockwell XFV-12 (historical reference), the Yak-38 Forger legacy studies, and private ventures from Mitsubishi Heavy Industries were assessed for maturity. Evaluations involved test ranges at Edwards Air Force Base, sea trials in the North Sea, and synthetic modeling at RAND Corporation and Royal United Services Institute analysis cells.

Development, Procurement, and Contracting

Contracting decisions invoked acquisition pathways used in programs such as the F-35 program and the Eurofighter Typhoon partnership. Prime contractors negotiated industrial participation with BAE Systems, Rolls-Royce plc, Pratt & Whitney, and supply chains centered on facilities in Broughton, Flintshire, Warton Aerodrome, and Seattle, Washington. Funding approvals required votes in the House of Commons, the United States Congress, and review by the National Audit Office (United Kingdom). Offset agreements involved aerospace clusters in Toulouse, Seville, and Turin. Program milestones mirrored stages in the Defense Acquisition System and included System Development and Demonstration phases, Milestone B approvals, and Production Readiness Reviews influenced by reports from the Government Accountability Office.

Operational Transition and Training

Transition plans addressed pilot conversion from Harrier avionics to glass cockpits and helmet-mounted displays similar to Elbit Systems and Rockwell Collins suites, maintenance retraining for composite airframe repairs, and deck-handling doctrine updates at HMS Prince of Wales. Training pipelines integrated squadrons from No. 1 Squadron RAF and Marine Attack Squadron 231 with simulation at Defence School of Aeronautical Engineering facilities, combined exercises such as Joint Warrior, and carrier qualifications off HMS Ark Royal analogs. Logistics integration utilized concepts from Defense Logistics Agency and naval aviation supply chains through Fleet Air Arm support units and Marine Corps Logistics Command.

Cost, Schedule, and Political Considerations

Costs were benchmarked against multi-national programs like the F-35 Lightning II and the Eurofighter Typhoon, with debates over unit recurring flyaway cost, through-life sustainment, and export controls under regimes like the Wassenaar Arrangement and Arms Trade Treaty. Schedule pressures reflected carrier availability for sea trials, congressional budget cycles, and national elections in United Kingdom general election and United States presidential election years. Parliamentary scrutiny from Select Committee on Defence and hearings in the Senate Armed Services Committee influenced procurement pacing. Industrial politics included debates over sovereign capability, regional employment impacts in South West England, and technology transfer negotiations with partners like Italy and Japan.

Legacy and Impact on Naval/Air Doctrine

The replacement effort reshaped carrier aviation concepts, reinforcing STOVL emphasis in expeditionary strike groups and influencing doctrine at United States Marine Corps Combat Development Command and Royal Navy Fleet Air Arm on distributed maritime operations. It accelerated adoption of sensor fusion, networked operations with platforms such as the MQ-9 Reaper and P-8 Poseidon, and sustainment philosophies akin to the Through Life Capability Management approach. Industrial outcomes affected supply chains in Aerospace Valley (France) and consolidated expertise at Broughton and Warton, while strategic effects echoed in allied interoperability frameworks such as Combined Joint Operations from the Sea.

Category:Military procurement programs