As far back as 2019, Air Force weapons developers said the fighter had received massive structural upgrades to its upper wing skin and fittings, upper and lower bulkhead, and canopy sill longeron.
These adjustments extended the F-16’s service life by up to 4,000 flight hours, increasing its operational capability from 8,000 to 12,000 flight hours.
F-16 Fighting Falcon National Security Journal Photo. Taken on 9/18/2025 Onboard USS Intrepid.
The extended service life was made possible by Air Force efforts to give its 1970s-era F-16 fighter jet F-35 technology as part of a massive fleet-wide overhaul intended to improve targeting, attack precision, and computer systems—to extend the fighter’s combat life all the way into the 2040s.
It might be tough to imagine that today’s Air Force F-16 dates back to the 1970s, a fact that might lead some to wonder how the combat aircraft has sustained its combat relevance and performance in the dynamic threat environment of the 2020s.
In fact, the F-16 has not only maintained combat relevance and high performance. Still, it has also been called the “hardest adversary” by a US Navy F/A-18 pilot, according to an interesting write-up in the Aviation Geek Club.
Service Life Extension Plans for F-16 Fighter
The success of fighter upgrades dates back many years to the inception and preservation of a Service Life Extension Program (SLEP), which upgraded the upper wing skin and fittings, adjusted the bulkhead and canopy, and added an F-35 Active Electronically Scanned Array (AESA) radar.
With AESA, the F-16 incorporated an entirely new ability to find, detect, and track enemy threats at much greater ranges. The SLEP aimed to extend the flight time of F-16s from roughly 6,000 to 7,000 flight hours to 8,000 or more.
U.S. Air Force Maj. Taylor “FEMA” Hiester, F-16 Viper Demonstration Team commander and pilot, performs aerial maneuvers in a U.S. Air Force F-16C Fighting Falcon during an air show at Latrobe, Pennsylvania, June 21, 2025. The F-16, a multi-role fighter aircraft capable of both air-to-air and air-to-ground combat, demonstrates its versatility through dynamic aerial demonstrations at air shows across the globe. (U.S. Air Force photo by Senior Airman Steven Cardo)
The AESA radar, which Lockheed developers say can track up to 20 targets at once, is a massive upgrade over the F-16’s previous mechanically scanned radar.
By virtue of its ability to track multiple targets, the AESA radar can scan a 360-degree sphere, including horizontal, vertical, and diagonal vectors.
New Digital Cockpit
Not surprisingly, the F-16 has also received new cockpit avionics in recent years, including moving map displays, cockpit video, digital graphics screens, and new target-tracking systems. Upgraded F-16s also use a high degree of increased onboard automation to free up pilot focus and workload.
By automatically performing a range of important procedural functions independently, a pilot is then freed up to focus more intently on other mission-critical tasks.
Alongside the Air Force SLEP, Lockheed Martin has also been developing a new F-16v variant, which continues to inspire allied interest worldwide.
The F-16v also uses new computers and software, along with a high-definition cockpit display.
The United States Air Force Air Demonstration Squadron “Thunderbirds” perform at the Defenders of Liberty Airshow at Barksdale Air Force Base, Louisiana, March 29-30, 2025. The Thunderbirds perform at air shows across the country to showcase the capabilities of the United States Air Force, its Airmen, and the F-16 Fighting Falcon. During World War II, Barksdale served as a major bomber training base, and it has since become the home of the 2nd Bomb Wing, the oldest bomb wing in the Air Force. (U.S. Air Force photo by Tech. Sgt. Keith James)
A U.S. Air Force F-16 Fighting Falcon from the 31st Fighter Wing, Aviano Air Base, Italy, descends after receiving fuel from a KC-135 Stratotanker from the 100th Air Refueling Wing, RAF Mildenhall, England, over the Adriatic Sea, Aug 7, 2025. The F-16 is a compact, highly maneuverable multi-role fighter aircraft with robust air-to-air combat and air-to-surface attack capabilities. (U.S. Air Force photo by Senior Airman Christopher Campbell)
U.S. Air Force Col. Kevin Crofton, 52nd Fighter Wing commander, taxis in an F-16 Fighting Falcon during his fini flight at Spangdahlem Air Base, Germany, May 19, 2025. The fini flight is a long-standing U.S. Air Force tradition that marks the final flight of an aircrew member’s current assignment. (U.S. Air Force photo by Senior Airman Albert Morel)
The “v” model also adds a new data bus, an electronic warfare suite, a missile warning sensor, and a helmet-mounted cueing system.
Infrared Search and Track
This upgraded F-16v technical foundation served as the starting point for Lockheed Martin’s next-generation F-16.
Along with its AESA radar, the F-16 also integrates a high-tech, next-generation targeting system called Infrared Search and Track (IRST). IRST, which is used extensively in the F/A-18 Super Hornet fighter jet, is a passive, long-range sensor that searches for and detects infrared emissions.
Much like the AESA, the IRST can track multiple targets at once and operate in an electromagnetic warfare environment.
As a passive, long-range sensor, able to provide air-to-air targeting, IRST introduces new combat variables for the F-16.
In effect, while there are ultimately limits to how much an older aircraft can be upgraded, today’s F-16 is almost an entirely different airplane apart from keeping its basic airframe configuration.
About the Author: Kris Osborn
Kris Osborn is the President of Warrior Maven – Center for Military Modernization. Osborn previously served at the Pentagon as a highly qualified expert in the Office of the Assistant Secretary of the Army—Acquisition, Logistics & Technology. Osborn has also worked as an anchor and on-air military specialist at national TV networks. He has appeared as a guest military expert on Fox News, MSNBC, The Military Channel, and The History Channel. He also has a Masters Degree in Comparative Literature from Columbia University.
