Another cutting-edge F-35 fighter jet falls out of the sky. Here's what to know.
Each F-35 costs tens of millions of dollars to build, and the Defense Department had about 620 of them in 2024, according to a government report.
The crash of an F-35 stealth fighter jet in California joins a list of accidents in recent years that have highlighted controversy surrounding the aircraft.
The U.S. Navy said July 30 that the jet crashed near Naval Air Station Lemoore in central California, and its pilot safely ejected. The cause of the crash was still under investigation and no further details were provided.
The crash is one of a dozen such F-35 accidents since 2018, most of which involved U.S.-operated jets, and comes at a time of heightened scrutiny of the entire aviation industry after a series of commercial, military and small-aircraft disasters in 2025, said Blake Stringer, director of the Center for Aviation Studies, Mechanical and Aerospace Engineering at The Ohio State University.
"That should be an unacceptable number of crashes," Stringer said. "It's an opportunity for experts to analyze data, look for the trends and statistical patterns and determine what recommended course of actions (is) needed to increase the safety."
F-35s, stealth fighter jets known for being the military's most expensive weapon system and credited with revolutionizing modern American warfare, are still a relatively new program for the U.S. military, Stringer said. They were created with affordability in mind so different branches of the military could use a standardized airframe with the ability to satisfy varying requirements, Stringer said.
The affordability piece hasn't exactly panned out. Since 2015, when the jets were declared mission-ready, growing governmental and civilian concerns about the costs of the F-35 program have clouded their reputation as among the most technically advanced aircraft in the U.S. arsenal. Before becoming president, Donald Trump tweeted in 2016 that the F-35 program’s cost “is out of control."
Each F-35 costs tens of millions of dollars to build, and the Defense Department had about 620 of them in 2024, according to a Congressional Budget Office report released in June 2025.
"F-35s’ operating and support costs exceeded $5 billion in 2023," the report found.
Why do the fighter jets keep crashing?
The latest crash was not the first in the United States in 2025: In January, an F-35 plummeted to the ground in Alaska, causing a fiery explosion at an Air Force base that was captured in dramatic video footage. In that crash, officials said the pilot, who safely ejected, experienced an "in-flight malfunction."
In May 2024, a pilot in New Mexico was seriously injured after he ejected from an F-35 before it crashed near an airfield in Albuquerque. In September 2023, a pilot ejected from an F-35 and parachuted into a backyard in Charleston, South Carolina. The jet flew unmanned for several minutes before it crashed into a field about 60 miles away.
Reports of downed F-35s draw national headlines and fresh waves of concern over the aircraft's safety and reliability. Though it's still too early to say what caused this week's crash or whether it's part of a pattern, it should prompt a closer look at the data, Stringer said. Safety failures, workplace shortages, infrastructure decay and other factors are affecting military aviation and the commercial airline industry, he said.
Government reports: F-35s are costly, underused
The F-35 program is estimated to top at least $2 trillion over the coming decades, with plans to buy about 1,800 more by the mid-2040s, the U.S. Government Accountability Office said in a report last year.
The fleet suffers from shortfalls in availability, the rate at which jets are mission-ready at any given time, government reports including the GAO and the Congressional Budget Office have found. In the past few years, availability has ranged from 50% to 60% of the U.S. fleet, which is under the program's target of 65%, the CBO said.
Crashes and any other malfunctions of the costly jets can add to concerns about availability, Stringer said.
"It’s important to acknowledge, yes, these are costly, but the cost comes with the capabilities that these systems bring," he said.
In May 2023, the Government Accountability Office said the jet program was more than a decade behind schedule and $183 billion over original estimates. Costs to maintain the fleet have increased 44%, from $1.1 trillion in 2018 to $1.58 trillion in 2023, the agency said.
Contributing: Christopher Cann, Paste BN; Reuters