F-35A Caught In Acquisition Dogfight Within U.S. Air Force
The Lockheed Martin F-35A is in trouble again. The U.S. Air Force is openly considering more affordable alternatives, including a clean-sheet design for a new fourth-generation fighter. A repair bottleneck, meanwhile, is choking the supply of engines, which threatens the operational fleet with groundings and restricted operations. And promised cost savings could still fall short of an ambitious target.
Hundreds of orders by the Air Force for F-35As far into the future could be at risk, starting with the size of the President Joe Biden’s first budget request to Congress for fiscal 2022.
The F-35A is one of three aircraft programs singled out for special review by new Deputy Defense Secretary Kathleen Hicks ahead of the fiscal 2022 budget submission this spring. For three consecutive years, the Air Force has sent annual requests for 48 F-35As to Congress along with an “unfunded priority” for 8-14 more, which lawmakers have approved (see table). The Hicks-directed review now casts the size of the baseline request into question, as well as any Defense Department tacit support for supplementary orders chipped in by lawmakers.
But the last-minute budget drill for fiscal 2022 is only a warm-up. Two separate studies are underway to reset the composition of the Defense Department’s tactical aircraft fleet plan for the first time in over a decade. The Pentagon’s Cost Analysis and Program Evaluation office will lead one study, and the Joint Staff another. Both studies will inform decisions for the fiscal 2023 budget request but could profoundly reshape U.S. tactical air procurement for several years to come.
“Development of an updated schedule that addresses all the previous causes of schedule overruns has got to be informed by a detailed understanding of the path ahead and associated timelines,” Pentagon spokesman John Kirby told reporters on March 9.
“We are continuing an analysis here, and we’ll deliver the proposed acquisition production baseline revision when it’s complete,” he said.
The uncertainty at home comes at a
critical time for the F-35A abroad. With a limited pool of customers trusted and well-funded enough to acquire the U.S. defense industry’s premier export product, the F-35A now must overcome the atmosphere created by a rising chorus of domestic criticism to win competitive contracts for about 200 aircraft orders this year by Canada, Finland and Switzerland combined. The UK, meanwhile, is poised to reveal the results of the delayed Integrated Review of Security, Defence, Development and Foreign Policy, with the F-35B program vulnerable to deep cuts [emphasis added].
As foreign governments decide how much to invest in F-35s, they are hearing a clamor of confused messages about the aircraft’s value from U.S. Air Force leadership. With Congress’ approval, the Pentagon’s request in 2019 to buy the first eight of 144 Boeing F-15EXs broke the F-35A’s decade-long monopoly on the Air Force’s fighter procurement. But U.S. defense officials were careful to frame that decision as a one-off, expedient solution to an airframe longevity crisis that had erupted within the Boeing F-15C/D fleet.
The ongoing fleet reviews offer no such cover. Within the next few years, the Air Force plans to start replacing a fleet of so-called “pre-block” Lockheed F-16s, which includes 211 Block 30s, 37 Block 32s and 20 Block 25s, according to Aviation Week’s Military Fleet Discovery Database. Since 2001, the
F-35A has stood officially as the service’s only replacement option for the pre-block F-16 fleet, but that is no longer the case [emphasis added].
As the internal Pentagon reviews progress, a
wide range of alternatives to the F-35A are in consideration for replacing pre-block F-16s, including unmanned aircraft systems to perform a subset of the adversary air mission, new-build F-16s and a clean-sheet fighter that U.S. Air Force Chief of Staff Gen. Charles Q. Brown, Jr., has described loosely as either a “fourth-generation-plus” or “fifth-generation-minus platform [emphasis added].”
As the Air Force considers options, a
major driver is a single metric: operating cost. In 2018, then-Chief of Staff Gen. David Goldfein warned that the F-35A’s operating costs made the service’s plans to ramp up production impossible. Lockheed and the Joint Program Office responded by committing to lowering the F-35A’s cost per flight hour to $25,000 by 2025, a significant reduction from about $35,000 last year [emphasis added].
The program office has reported further progress, including signing annual sustainment contracts in fiscal 2020, which lowered the cost per flight hour by $2,000. Another initiative is replacing the much-criticized Autonomic Logistics Information System (ALIS) with the Operational Data Integrated Network (ODIN). Moving the administration of maintenance tasks to a cloud-based network can, in theory, help the Air Force save significantly on personnel costs. An army of administrators distributed to each unit could be consolidated at ODIN support hubs, but only if Air Force leaders accept such streamlined organizational changes.
Some service officials remain skeptical that the operating costs of the F-35A will become competitive with the F-16 within four years.
“In terms of [my] confidence level of getting to $25,000 [cost per flight hour] by 2025, I’m not brimming with confidence,” Air Combat Command Chief Gen. Mark Kelly said at the Air Warfare Symposium in late February, adding: “I haven’t lost confidence.”
The F-35A’s operating cost problem is now impossible to ignore. With the first 12 lots of low-rate initial production delivered, the F-35A now counts as the second-most numerous fighter fleet in the Air Force inventory behind only the F-16C/D, with an hourly operating cost more than 50% higher.
The service faces another problem with the availability of the F-35A. Deployments to the Middle East resulted in heavy usage in the region’s sand-flecked atmosphere, exposing a durability problem with the original coating applied to the high-pressure turbine blades inside the Pratt & Whitney F55 engine.
“They’ve been deployed to different locations, and that extra time on the engines is causing them to fail a bit sooner,” Brown told journalists on Feb. 17.
Pratt & Whitney, however, says the overall number of unscheduled engine removals is still below the manufacturer’s expectations. A new coating for the turbine blades also is being developed to fix the durability problem, says Matthew Bromberg, president of Pratt & Whitney Military Engines.
The fleet availability problem is caused by a bottleneck at the F135 repair depot, Bromberg says. The depot has been overwhelmed by a surge of workload. Scheduled engine removals started on F135 engines for the first time this year. Unscheduled engine removals, including because of the coating problem, also are flowing into the depot. Routine, fleet-wide configuration updates have to be processed through the depot as well. The F135 employs a two-level maintenance concept, meaning interior repairs to the power modules must be handled by the depot rather than at the operational unit. Two-level maintenance is supposed to be more efficient, but only if the depot is ready to handle the workload...
After breaking F-35A order monopoly last year, USAF seeks wide range of alternatives to only domestic stealth fighter in production.
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