EasyJet Flight U24429 Emergency: Cockpit Breach at 20,000 Feet

On 22 August 2025, a man in the grip of an acute psychotic episode attempted to break into the cockpit of an easyJet Airbus A320 shortly after it left Lyon. The aircraft squawked 7700 at 20,000 feet and turned back. Here is the full account.

Quick Facts

• Flight: EasyJet U24429 / EJU4429
• Route: Lyon Saint-Exupéry Airport (LYS) to Porto Francisco Sá Carneiro Airport (OPO)
• Date: Friday, 22 August 2025
• Aircraft: Airbus A320-214, registration OE-IJL
• Emergency declared: Squawk 7700 at 20,000 feet
• Cause: 26-year-old Portuguese passenger attempted to force entry into the flight deck
• Injuries: None
• Outcome: Aircraft returned to Lyon, passenger removed by police and hospitalised, flight continued to Porto the same evening

A 26-year-old Portuguese man suffering from airsickness and an acute psychotic episode tried to break through the cockpit door of an easyJet flight from Lyon to Porto on the evening of 22 August 2025, forcing the aircraft to abandon its route and return to its departure airport less than 45 minutes after taking off.

French police and easyJet both confirmed the details publicly the following day. The passenger was taken off the aircraft, hospitalised in Lyon, and the flight eventually reached Porto that same night.

What Happened on the Lyon to Porto Flight

EasyJet flight U24429 departed Lyon Saint-Exupéry on runway 35L at 18:34 CEST. It was already running one hour late. Shortly after climbing through 20,000 feet, a passenger made his way toward the front of the cabin and attempted to force his way through the cockpit door.

Cabin crew and other passengers physically restrained him. At the same time, the flight crew broadcast squawk 7700, the universal emergency transponder code that alerts air traffic control to an emergency in progress, and immediately began turning the aircraft back toward Lyon.

The Airbus A320, registered OE-IJL, landed on runway 35R at approximately 19:19 CEST, 45 minutes after departure. It was directed straight to a remote stand, where French police and medical teams were already in position. The man was taken from the aircraft and transferred to hospital.

Once he had been removed and the situation cleared, the aircraft was released and continued its original journey to Porto later that Friday evening.

Who Was the Passenger?

French police confirmed the man was a 26-year-old Portuguese national with no prior criminal record. Medical examinations at Lyon carried out after landing showed he was suffering from airsickness combined with an acute psychotic disorder that had sent him into a state of delirium during the flight.

He had no previous history with law enforcement. French authorities treated the case as a medical matter. He was admitted to a French hospital for assessment and treatment.

What police confirmed:

• Age: 26
• Nationality: Portuguese
• Medical condition: Airsickness and acute psychotic disorder
• Criminal record: None — not previously known to authorities
• Outcome after landing: Hospitalised in Lyon

EasyJet’s Official Statement

EasyJet issued a statement the morning after the incident. In it, the airline said:

“Flight EJU4429 from Lyon to Porto returned back to Lyon shortly after take off due to the behaviour of a passenger onboard. The flight was met by police on arrival and once the passenger was removed by police, the flight continued onto Porto.”

(Source: Agence France-Presse, 23 August 2025)

What Does Squawk 7700 Mean?

Squawk 7700 is the transponder code for a general emergency. When a flight crew sets it, the signal is broadcast to every air traffic control radar in range and flags the aircraft as an emergency priority across the system.

The code covers any category of emergency — mechanical, medical, or security. Controllers immediately clear airspace, prioritise the aircraft for landing, and alert ground services at the nearest suitable airport.

In the case of the easyJet U24429 emergency, the squawk was set at 20,000 feet. The aircraft was back on the ground at Lyon 45 minutes after it had first taken off.

Why the Cockpit Door Held

The reinforced cockpit door fitted to the Airbus A320 is one of the most consequential safety changes introduced to commercial aviation following the September 11 attacks. Under ICAO standards, which EASA enforces across European airspace, the cockpit door must be locked from the moment the engines start. It can only be opened from inside the flight deck.

Most A320 family aircraft carry a Cockpit Door Surveillance System, a CCTV-linked screen inside the cockpit that shows pilots exactly who is on the other side of the door before any action is taken.

The European Cockpit Association has confirmed that since reinforced cockpit doors were introduced across commercial aviation after September 11, no unauthorised cockpit intrusion attempt has ever succeeded on a commercial passenger aircraft.

Following the Germanwings tragedy in March 2015, EASA issued Safety Information Bulletin SIB 2015-04, the “two-persons-in-the-cockpit” recommendation. It requires that whenever one pilot leaves the flight deck, a second authorised crew member steps in. The measure was designed specifically to ensure no single person is ever alone at the controls behind a locked door.

What French Law Says About Cockpit Intrusion Attempts

At the time of the incident, French Ordinance 2022-831, enacted on 1 June 2022, already placed attempted cockpit intrusion among the most serious tier of in-flight offences under French aviation law:

• Up to 5 years in prison
• A fine of up to €75,000

The ordinance also introduced administrative sanctions that carriers could report to aviation authorities directly, without waiting for police action.

Because the passenger had been diagnosed with acute psychosis and carried no criminal history, French authorities handled the case through the medical system rather than criminal prosecution. The legal exposure, however, was significant.

Three months after the incident, France went further. Decree No. 2025-1063, published on 7 November 2025, gave French civil aviation regulators direct sanctioning powers over disruptive passengers for the first time:

• €10,000 fine for a first offence
• €20,000 fine for repeat offenders
• No-fly bans of up to four years from French-licensed carriers

French Transport Minister Philippe Tabarot said at the time: “Disruptive behaviour on board aircraft is unacceptable. It jeopardises flight safety and compromises the working conditions of flight crews.”

The summer 2025 wave of serious mid-flight incidents across European carriers, with the U24429 cockpit attempt among the most serious, formed part of the political backdrop that accelerated that legislation.

A Rate That Has Climbed Every Year Since the Pandemic

The easyJet U24429 incident was not isolated. According to the International Air Transport Association (IATA), the annual rate of disruptive passenger incidents on flights has worsened every year since air travel recovered from the pandemic:

(Source: IATA Unruly Passenger Fact Sheets, official figures)

EASA separately estimates that a commercial flight within Europe is disrupted by a passenger incident approximately every three hours. Physical confrontations between passengers or with crew members, while still rare in absolute terms, rose 61 percent in 2022 compared to the year before.

Attempted cockpit intrusions sit at the highest severity level in aviation security classification. Mental health crises in flight are far less common than alcohol-driven incidents but are increasingly flagged by regulators as a category requiring better pre-boarding screening protocols.

The EasyJet U24429 emergency took 45 minutes from departure to resolution on the ground. What it put on display was a chain of responses working exactly as designed: cabin crew and passengers acted fast, the cockpit door did not give way, air traffic control at Lyon cleared the aircraft straight in, and emergency teams were on the stand before the aircraft stopped moving. The passenger who caused it was taken to hospital, not a cell, because French doctors made that call after landing. The flight that was supposed to arrive in Porto at around 20:00 that Friday night got there later. Everyone on board got where they were going. That, in the middle of what could have been something much worse, is the part worth noting.

Sources: Agence France-Presse (AFP) | AIRLIVE.net | Aviation24.be | Travel Tomorrow | RTÉ News Ireland | IATA Unruly Passenger Fact Sheets | SKYbrary (EASA/ICAO Aviation Safety) | European Cockpit Association | French Ordinance 2022-831 of 1 June 2022 | Decree No. 2025-1063 of 7 November 2025