An aviation safety incident involving a Dubai-based carrier has brought an industry-wide problem into sharp focus: deliberate crashes are prompting fresh scrutiny of cockpit technology and pilot psychological health. Instruments and display screens inside an aircraft cockpit.

Since 2005, at least 800 people worldwide have died in crashes that were suspected or confirmed to have been intentionally caused by pilots. A pilot accused of attempting to down a Boeing 737 MAX jet, in what is being called the Dubai aviation incident, has exposed that the industry's single largest vulnerability may be sitting inside the cockpit itself.

As commercial aviation has grown safer overall, the death toll attributed to suspected deliberate crashes has become increasingly stark. Data on accidents shows that since 2005, at least 800 people globally have lost their lives in crashes that U.S. authorities suspect or have confirmed were intentionally caused by pilots. Disasters that current and former U.S. officials attribute to deliberate pilot actions include a Malaysia Airlines flight that disappeared over the southern Indian Ocean in 2014, and an Air India crash in western India in 2025. Local investigators in those cases have not reached conclusions matching Washington's, and have yet to release final reports.

The 2015 crash of a Germanwings jet in the French Alps remains an officially confirmed case of deliberate downing. Families of the victims of the 2015 Germanwings disaster held a memorial last year at the crash site in the French Alps. Airlines, regulators and aircraft-equipment manufacturers have long worked to eliminate all manner of fatal accidents, including runway excursions, controlled flight into terrain and structural failures. According to aviation data firm Cirium, global flight volumes rose 37% over the past two decades. Accident statistics show that from 2005 to 2025, total civil aviation deaths worldwide fell 35%. In the United States, before last year's midair collision in Washington, D.C., the country had gone 15 years without a major commercial aviation accident that killed passengers.

Aviation safety experts say that if screening for potentially rogue pilots falls short, even the best pilot training and the technological safeguards on modern airliners can only do so much. John Cox, an aviation safety consultant and former head of a pilots' union, said: "The airplane only does what it is told to do." According to people familiar with the matter, senior executives at Boeing privately regard deliberate crashes as one of the leading sources of fatal commercial aviation accidents. These people said engineers have taken that risk into account when designing the next generation of airliners. Thomas Anthony, director of the aviation safety and security program at the University of Southern California, said that if a series of fatal accidents were caused by cockpit system failures or mechanical problems, it would immediately trigger widespread alarm and push regulators to take forceful action. "People would spring into action," he said.

Such accidents are rare but highly lethal, and officials find it very difficult to quantify the risk. In some cases, a major obstacle is the inability of the parties involved to agree on what caused the crash. Malaysian authorities released their final report on Malaysia Airlines Flight MH370 in 2018, saying they could not determine why the flight deviated from its course and could not rule out hijacking. A spokesperson for Malaysia's transport ministry said there is no new information on the cause. On the Air India crash, Indian pilot groups reject the inference that pilot action brought down the aircraft. India's Aircraft Accident Investigation Bureau said it will stick to conducting an "objective, evidence-based investigation."

Authorities in the Middle East say the co-pilot suspected of going rogue in the September 30 Dubai aviation incident held extremist views. They identified him as Hamam Hammami and accused him of attacking the captain with an emergency axe in an attempt to bring down the jet. Hammami told investigators he specifically sought out airlines and routes that could fly to Israel, and that he had nearly carried out an attack in July. Reporter Benjamin Katz examined the rapid-descent data, flight-tracking information and rare safety implications of this cockpit confrontation. Authorities are investigating how Hammami was able to qualify to fly the Dubai-to-Tel Aviv route.

Cockpit control. A fundamental principle of civil aviation is that the pilot has final authority over the aircraft's operation. But after the September 11 hijackings in 2001, the U.S. government and industry quickly sought technological means to prevent deliberate destruction of aircraft. Later that September, President George W. Bush pledged to advance a range of improvements, including reinforced cockpit doors and the development of technology that would let controllers take over an aircraft in distress and land it remotely. Companies such as Boeing and Honeywell studied technology that could override pilot commands. The late Honeywell engineer Don Bateman once told an industry journal: "The airplane should be able to refuse to be destroyed." Yet remote-landing systems were never deployed on passenger aircraft. One major concern was the risk that the system could be hacked. In 2006, Boeing applied for a patent on an "uninterruptible autopilot" that, once activated, could not be disengaged from inside the cockpit. The aviation giant says the system was never installed on any commercial aircraft.

Work on automated safety protections has continued, and ground collision-avoidance systems were later used on some U.S. military fighter jets. In recent years, Airbus has proposed allowing aircraft to operate with just one pilot on duty during the cruise phase, with the other pilots resting. European and American pilot associations, U.S. regulators and Boeing have all been skeptical of the Airbus proposal. People familiar with the matter said Boeing executives have discussed the potential safety gap created by "a single rogue pilot alone in the cockpit." Mike Whitaker, who served as administrator of the U.S. Federal Aviation Administration during the Biden administration, said: "It's a huge risk. That's the fundamental reason the whole concept doesn't work." Airbus says it supports two-pilot cockpits and plans to rely on technology to improve flight safety. Boeing says its design for the next all-new airliner is still based on a two-pilot cockpit. People familiar with the matter say that while Boeing still plans to leave final authority over aircraft control with pilots, the advanced computers on its new aircraft are expected to carry new automated protections that would make accidental or deliberate downing harder to carry out. Boeing declined to discuss the issue of deliberate crashes. The company said it supports legislation recently advanced in the U.S. Congress aimed at addressing pilot mental health.

Pilot behavior under sustained scrutiny. After the 2015 Germanwings crash, pilot mental health drew widespread attention. In that accident, the co-pilot locked the captain out of the cockpit while the captain was away using the restroom, then deliberately flew an Airbus A320 into a mountain, killing all 150 people on board. The French accident investigation report recorded that weeks before the crash, the co-pilot had shown clear psychiatric symptoms, and doctors had recommended inpatient treatment and prescribed multiple medications. But German privacy laws limited doctors' ability to report to aviation regulators, so the regulator missed a chance to intervene.

After the Germanwings tragedy, regulators, industry figures and advocates pushed to lower the barriers for pilots seeking psychological treatment. Airlines set up peer-support networks for pilots; the European Union began requiring doctors to report pilots' serious mental illness to authorities. Regulators and people involved believe the key to preventing such extreme events is, above all, removing the stigma attached to mental health problems and eliminating pilots' fears that seeking help will cost them income or lead to their licenses being revoked. The FAA says it is overhauling its mental health management system. Critics say the old system was outdated and overly punitive. For example, pilots can now keep flying while taking a wider range of psychiatric medications; the FAA has shortened the waiting period for pilots to return to flying after treatment. Dr. Susan Northrup, the FAA's federal air surgeon who oversees pilot medical certification, said in August: "We want to streamline the process so more people come forward and get the treatment they need."

Authorities investigating last year's major Air India accident said in court filings that they are examining multiple factors, including conducting a "psychological autopsy and assessment." A draft final report is expected to be completed this month. The Indian government agency leading the investigation declined to comment. The Dubai aviation incident, meanwhile, has exposed how the entire management system can still fail even when a pilot has been deemed unfit to fly. The co-pilot of the flight involved, Flight 1073, Hammami, had been grounded two years earlier by his former employer, Oman Air, placed in a deradicalization program and reassigned to an office job. He left Oman Air last year, joined the fast-growing Dubai carrier in February, and was subsequently assigned multiple times to fly the region's most sensitive routes.