The Fleet Readiness Heart Southwest accomplished its first totally in-house Block III Tremendous Hornet improve, combining the work with the continuing Service Life Modification effort.
The Fleet Readiness Heart Southwest (FRCSW) introduced on Apr. 21, 2026, that it accomplished the primary totally in-house modification of an F/A-18E/F Tremendous Hornet for the naval jet’s Block III program. The Block III modification is the third and most superior section of the Service Life Modification (SLM) effort for the U.S. Navy’s Tremendous Hornet fleet, says the service, which might permit the fighter to serve nicely into the 2040s.
FRCSW highlighted how years of preparatory efforts made this doable. This included coordination with Boeing, the F/A-18E/F and E/A-18G Growler program workplace PMA-265, repairing sudden injury, whereas complying with stringent technical specs, and synergizing the work of varied engineers and technicians from a number of streams.
With Boeing planning to finish the Tremendous Hornet’s manufacturing by 2027, the fighter and its digital warfare spinoff, the E/A-18G Growler, will stay the U.S. Navy’s premier multirole platforms, till the arrival of the F/A-XX.
SLM and Block III packages
The Block III upgrades are a part of the Service Life Modification (SLM) on the Tremendous Hornet. The SLM’s first section is the Service Life Extension (SLE), which initially prolonged Tremendous Hornet’s life from 6,000 to 7,500 flight hours and, since 2023, is additional extending the service life to 10,000 flight hours.
The primary two plane to be modified have been delivered again to the U.S. Navy on June 27, 2024, after lower than a 12 months and forward of schedule. In December 2025, Boeing obtained a $931 million contract to proceed the SLM program on 60 plane, which might be part of the roughly 125 Tremendous Hornets already coated by a sequence of contracts since 2018.
The tip of the Tremendous Hornet’s manufacturing is anticipated to not have an effect on the Navy’s present fleet of roughly 550 F/A-18E/F fighters, and their modernization and upkeep will permit them to stay related in fashionable situations. The FRCSW, which might modify as much as 40 plane a 12 months, is among the three areas conducting the Block III upgrades, two others being in St. Louis.
VX-9 F/A-18E Block III Tremendous Hornet headed out of Fort Value Alliance Sunday. The obvious exterior signal of a Block III appears to be the small hump on the highest of the backbone in direction of the tail. Perhaps we’ll see them with the CFTs some day. 169971 XE-360 pic.twitter.com/NTNQdhmSq7
— Sam Combs (@pressxtolive) July 17, 2023
Block III options
The Block III improve primarily encompasses a new cockpit show, electronics, avionics and computing structure. At one level, this system additionally envisaged conformal gas tanks (CFT) including a further 3,500 lb gas capability, nevertheless that plan was later dismissed.
Tremendous Hornets underneath Block III would obtain an Superior Cockpit System (ACS) with a ten×19 inch large-area touchscreen show; a contemporary Distributed Focusing on Processor Community (DTP-N) and the Tactical Focusing on Community Expertise (TTNT); open mission programs; decreased radar signature; and the AN/ASG-34 IRST (Infrared Search-and-Observe).
Block III tremendous hornet for context. There’s additionally nothing apart from mirrors, obligatory lights and the backup magnetic compass on the cover body, not like the Su-57, which has some form of selector on the cover body. You possibly can see the totally different shapes, sizes and distinct positions of… pic.twitter.com/iQIkGbsXxm
— Heatloss (@heatloss1986) November 19, 2025
The FRCSW’s press launch shed additional gentle on the avionics upgrades, the ACS and its benefits, as part of the Tremendous Hornet’s Block III configuration:
Superior Cockpit System (ACS) set up
A brand new large-area cockpit show
Complete avionics suite upgrades
Enhanced plane networking functionality
Electrical system modernization to assist upgraded programs
“The ACS essentially transforms the cockpit. Plane that after relied on older show expertise are actually outfitted with fashionable, user-friendly massive display interfaces. This improve permits pilots to totally leverage the plane’s enhanced capabilities, bringing this fourth-generation platform considerably nearer to fifth-generation efficiency at a fraction of the fee,” stated the assertion from FRCSW.
CVN-71 USS Theodore RooseveltROKFLT, BusanF/A-18E Buno.169953VFA-25 “Fist of the Fleet” NH400
Glad to satisfy the model new Block III Tremendous Hornet! pic.twitter.com/gKULgztBab
— Hornet (@hornetysfs) June 23, 2024
The FRCSW additional added that the completion of its first totally natural F/A-18 Tremendous Hornet Block III modification marks a significant milestone since this was “the primary time U.S. army artisans and engineers executed the entire improve in-house, marking a pivotal step ahead in naval aviation readiness.”
FRCSW break up the work in three phases: the structural SLM, Block III upgrades for community and mission enhancements and the Block III ACS and avionics modernization. “This phased strategy allowed FRCSW artisans and engineers to refine processes, sequence work effectively, and cut back price and turnaround time (TAT),” stated the assertion.
FRCSW additional distinguished between the SLM and the Block III upgrades: “The modification doesn’t lengthen the bodily lifetime of the plane, that’s the function of the structural SLM, nevertheless it ensures the avionics and mission programs stay tactically related for the plane’s service life.” Nevertheless, taken collectively, these type a “life-extension and capability-enhancement technique” that make sure the Tremendous Hornet will stay a key element of the Navy’s service air wing nicely into the 2040s.
U.S. Navy F/A-18 Tremendous Hornets aboard USS Abraham Lincoln (CVN 72) put together for a nighttime fight mission throughout Operation Epic Fury, March 25. pic.twitter.com/glxEH2qlNO
— U.S. Central Command (@CENTCOM) March 29, 2026
Technical efforts
For the technically “complicated avionics upgrades” as part of the Block III modification, that “primarily guts the cockpit,” FRCSW engineers and technicians needed to take away and exchange structural elements; extract and reinstall wiring and fiber optics; set up new shows and interface programs; and undertake electrical upgrades to assist fashionable avionics.
Avionics technicians, sheet metallic mechanics, ordnance specialists, and engineers and high quality assurance personnel needed to adjust to the 350-plus pages lengthy Technical Directive (TD), dictating “all the way down to how wiring and fiber optics have to be routed and secured.” FRCSW and Boeing labored collectively to make sure each step meets present security and high quality requirements.
Further sudden “corrosion, worn wiring or legacy injury” will also be discovered as plane are disassembled, which “have to be corrected earlier than modernization can proceed,” additional complicating the intricate efforts. “This provides layers of complexity to an already intricate effort,” FRCSW defined.
