The U.S. Navy is constant the work to increase the F/A-18E/F Tremendous Hornet’s service life to 10,000 flight hours, with the newest contract overlaying as much as 60 plane.
The U.S. Navy has awarded Boeing a brand new contract, value $930.77 million, to proceed the work on the Tremendous Hornet Service Life Modification (SLM) program. As a part of this system, as much as 60 F/A-18E/F plane will see their service life prolonged from 6,000 flight hours to 10,000 flight hours.
Furthermore, the plane may even endure the combination of Block III avionics capabilities as a part of the identical contract. In truth, the modifications for the Block III improve are being built-in concurrently with the SLM.
The SLM program is important to maintain the Tremendous Hornet related in trendy situations because the platform not too long ago turned 30. Additionally, with the F/A-XX next-generation fighter in a limbo and with an unsure future, the Navy wants to verify the plane can fly properly into the 2030s and early 2040s to keep away from harmful functionality gaps.
The 60 plane lined by this contract, awarded on Dec. 16, 2025, will be a part of no less than 125 Tremendous Hornets that are already lined by a number of contracts awarded since 2018. The Navy in the present day has round 550 F/A-18E/F Tremendous Hornets in service.


The Tremendous Hornet Service Life Modification program
The Service Life Modification (SLM) program provides 4,000 flight hours to the service lifetime of the already delivered Tremendous Hornets, in addition to making use of the Block III upgrades. The primary part of the SLM program has already been in movement for some years, extending the service lifetime of the Tremendous Hornet from 6,000 to 7,500 flight hours.
The second part, which began in 2023, is seeking to lengthen the service life to 10,000 flight hours and carry out the modifications required for the Block III upgrades. The primary two plane to be modified have been delivered again to the U.S. Navy on Jun. 27, 2024, after lower than a yr and forward of schedule.
In accordance with the corporate, the plane have been delivered one month forward of schedule from St. Louis and two months forward of schedule from San Antonio. The press launch added that the 2 plane have the identical capabilities as Tremendous Hornets being delivered from Boeing’s new-build manufacturing line.
“Nice measures have been taken by the Boeing and Navy groups to make sure these are the most secure and most succesful Block III F/A-18s we may give our warfighters,” stated Mark Sears, Boeing Fighters vp. “These are simply the primary of many deliveries, with round 15 years of SLM deliveries to go.”


Though Boeing will cease to the manufacturing of the Tremendous Hornet in 2027, this won’t have an effect on the modernization presently in progress within the U.S. Navy F/A-18E/F fleet. In truth, these works, together with the same EA-18G modernization, will proceed on a separate manufacturing line properly into the 2030s.
The firm and the Navy labored carefully to enhance productiveness and full Block III upgrades forward of the 15-month contract requirement. This was made attainable by establishing a baseline for the situation of Block II F/A-18s obtained at Boeing, and the Navy’s work to organize the jets upfront, in addition to sharing info and finest practices throughout a number of SLM websites to enhance effectivity, handle workload distribution and optimize useful resource allocations.
The Tremendous Hornet Block III
Because the airframe approached mid-life, the U.S. Navy initiated the Block III improve. The improve, that includes a renewed cockpit, new computing structure and community infrastructure, in addition to the chance – later dismissed – so as to add conformal gas tanks, has been developed to increase the fleet’s service life and relevance.
The important thing capabilities made accessible by the brand new variant embody Superior Cockpit System centered across the 10×19 inch large-area touchscreen show, a sophisticated community infrastructure that comes with the Distributed Concentrating on Processor Community (DTP-N) and the Tactical Concentrating on Community Know-how (TTNT), open mission methods, lowered radar signature, a ten,000-hour airframe, the AN/ASG-34 IRST (Infrared Search-and-Monitor) and the provisions for Conformal Gasoline Tanks (CFT) with a further 3,500 lb gas capability.


There are presently three work traces concerned in this system, two in St. Louis and one on the Fleet Readiness Heart Southwest, which might modify as much as 40 plane per yr. In 2022, Rear Adm. Andrew Loiselle, director of Air Warfare Division within the Workplace of the Chief of Naval Operations, talked about that the implementation of finest practices throughout Section One SLM allowed a 30% p.c price discount. The preliminary SLM budgeted price per plane was $5.5 million, with a turnaround time of 15-17 months.
The variety of plane that will likely be upgraded and see their service life prolonged isn’t but clear, because the Navy has not but finalized it. The SLM nonetheless will likely be used to regulate the supply of the plane, finally ramping up or cutting down this system in line with future budgets, schedules and necessities.
Because of this improve, the Tremendous Hornet and the equally upgraded Growler will proceed to serve within the U.S. Navy for the a long time to come back. ”The Tremendous Hornet stays a predominant plane within the service air wing and can proceed to offer vital fight functionality into the 2040s,” says Rear Admiral John Lemmon, the navy’s program government officer for tactical plane.


