What is the Life Expectancy of an F-35 Fighter Jet?

Military vehicles and equipment are built to last, and are designed to withstand the most dangerous environments in peacetime and wartime. The same goes for fighter jets like the F-35, which often need to stay in the air without refueling, especially during long flights. But when it comes to the lifetime of the F-35, the exact number is 8,000 flight hours per airframe.

This number is from the Defense Department’s Selective Acquisition Report for fiscal year 2022. The term “airframe” refers to the total number of flight hours of each F-35 aircraft since its date of manufacture. Even if the engine is changed, or the aircraft itself is upgraded, if that F-35 spends time in the air, that time is counted in the total airframe. According to the US government’s 2024 report on F-35 sustainability, each variant of the F-35 typically flies a certain number of hours per year. The F-35A gets about 187 hours, and the F-35C gets about 336 hours.

So using a specified airframe of 8,000 flight hours, the F-35A, the only nuclear-powered variant, can achieve a shelf life of 43 calendar years. The IF-35C can technically reach a lifespan of about 24 calendar years. However, these numbers are theoretical and do not include maintenance issues. And they don’t account for additional flying time due to active deployments, or other factors that may increase or decrease the number of flying hours per year.

According to an internal study by the Defense Department’s Office of the Inspector General, only about half of the F-35s in active service were actually available for fiscal year 2024. This means that fighters only fly about 50% of the time they could, thus reducing the total number of airframe hours each aircraft accumulates per year. This was due to maintenance gaps and maintenance issues, which limited the airframe’s operating hours.

These usage patterns are worth noting when looking at how the original three F-35 models entered service and are used today. In fact, the jets started in 2011, when Lockheed Martin designed different versions for three different branches of the US military. The IF-35A was first introduced to the US Air Force that year and became part of the fleet just four years later. By 2016, the F-35A had joined regular operations.

The IF-35B also arrived in the US Marine Corps in 2011, and was ready for regular operations in 2015. The IF-35C, the newest of the three, was not adopted by the US Navy until 2013 and did not join regular operations until 2019. he banned other countries from using it. Despite fewer flight hours in recent years, the military plans to operate the F-35 fleet until 2077 or 2088, depending on the variant and branch of service.